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1

Pomona Loop Baseline Performance Testing.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

Pomona Loop Baseline Performance Testing Summary Pomona Loop Baseline Performance Testing Summary The U.S. Department of Energy's Field Operations Program sponsors the Urban and Freeway Pomona Loop range testing in Southern California. The testing is performed by one of the Program's testing partners, Southern California Edison. The vehicles are tested on local city streets (Urban Loop) and four highways (Freeway Loop). The Urban Loop is 19.3 miles long, ranging in elevation from 900 to 1500 feet, with approximately 50 stop signs and traffic lights. The Freeway Loop is 37.2 miles long, ranging in elevation from 700 to 1150 feet, and consists of four connected freeways shaped like a rectangle. When a vehicle is Pomona Loop tested, eight range tests are performed, with four tests on the Urban Loop and four on the Freeway Loop. The range tests are performed

2

Pomona, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Pomona, California: Energy Resources Pomona, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 34.0552886°, -117.7522793° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.0552886,"lon":-117.7522793,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

3

City of Pomona, Kansas (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Pomona Pomona Place Kansas Utility Id 15201 Utility Location Yes Ownership M NERC Location SPP NERC SPP Yes Activity Generation Yes Activity Transmission Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png City Residential Residential General Service Small Residential General Service Small Commercial Commercial General Service Small Industrial Industrial Rural Residential Residential Rural Residential outside three mile radius Residential Unmetered Security Lights No Supplied Pole Lighting Unmetered Security Lights Pole Supplied Lighting Average Rates Residential: $0.1210/kWh

4

Secretary Steven Chu's Remarks as Prepared for Delivery at the Pomona  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Secretary Steven Chu's Remarks as Prepared for Delivery at the Secretary Steven Chu's Remarks as Prepared for Delivery at the Pomona College Commencement Secretary Steven Chu's Remarks as Prepared for Delivery at the Pomona College Commencement May 15, 2011 - 1:04pm Addthis Remarks as Prepared for Delivery Sunday, May 15, 2011 Secretary Steven Chu President Oxtoby, trustees, faculty, family, friends and most importantly, the class of 2011, thank you for letting me share this wonderful day with you. To the new graduates: Congratulations on your achievements. I feel especially honored to be chosen to speak at this commencement, the 47th anniversary of Pomona's discovery that the number 47 is special. I agree. I was conceived in 1947. On this special year, there is additional pressure to say something memorable, something that will be remembered 47 years from now. Hah, you

5

Sheet.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

Test Date: October 1999 1997 CHEVROLET S-10 ELECTRIC (LEAD-ACID) PERFORMANCE CHARACTERIZATION SUMMARY ELECTRIC TRANSPORTATION DIVISION Urban Range (On Urban Pomona Loop - see other...

6

Sheet.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

Test Date: July 1999 1999 NISSAN ALTRA EV (LITHIUM ION BATTERIES) PERFORMANCE CHARACTERIZATION SUMMARY ELECTRIC TRANSPORTATION DIVISION Urban Range (On Urban Pomona Loop-see other...

7

Toyotasummarysheet.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

TOYOTA RAV4-EV (CONDUCTIVE) PERFORMANCE CHARACTERIZATION SUMMARY ELECTRIC TRANSPORTATION DIVISION Urban Range (On Urban Pomona Loop - see other side for map) Payload (lb.) 93.0...

8

chevy.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

CHEVROLET S-10 ELECTRIC LEAD ACID BATTERIES SEPTEMBER 1997 Urban Range (On Urban Pomona Loop - see other side for map) Range (mi.) Without Aux. Loads With Aux. Loads 30.3 40.7...

9

epic.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

CHRYSLER EPIC LEAD ACID BATTERIES JUNE 1997 Urban Range (On Urban Pomona Loop - see other side for map) Range (mi.) Without Aux. Loads With Aux. Loads 46.2 55.2 58.6 Payload (lb.)...

10

ev1.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

GM EV1 LEAD ACID BATTERIES SEPTEMBER 1997 Urban Range (On Urban Pomona Loop - see other side for map) Range (mi.) Without Aux. Loads With Aux. Loads 60.1 74.8 80.1 Payload (lb.)...

11

Loop-to-loop coupling.  

Science Conference Proceedings (OSTI)

This report estimates inductively-coupled energy to a low-impedance load in a loop-to-loop arrangement. Both analytical models and full-wave numerical simulations are used and the resulting fields, coupled powers and energies are compared. The energies are simply estimated from the coupled powers through approximations to the energy theorem. The transmitter loop is taken to be either a circular geometry or a rectangular-loop (stripline-type) geometry that was used in an experimental setup. Simple magnetic field models are constructed and used to estimate the mutual inductance to the receiving loop, which is taken to be circular with one or several turns. Circuit elements are estimated and used to determine the coupled current and power (an equivalent antenna picture is also given). These results are compared to an electromagnetic simulation of the transmitter geometry. Simple approximate relations are also given to estimate coupled energy from the power. The effect of additional loads in the form of attached leads, forming transmission lines, are considered. The results are summarized in a set of susceptibility-type curves. Finally, we also consider drives to the cables themselves and the resulting common-to-differential mode currents in the load.

Warne, Larry Kevin; Lucero, Larry Martin; Langston, William L.; Salazar, Robert Austin; Coleman, Phillip Dale; Basilio, Lorena I.; Bacon, Larry Donald

2012-05-01T23:59:59.000Z

12

Urbanizing terrains  

E-Print Network (OSTI)

Urban "sprawl"in the East Attica area of Athens has dramatically changed the former rural economy in a manner consistent with the urbanizing terrain's underlying properties: agricultural subdivisions, existing centres, ...

Romanos, Christoforos

2008-01-01T23:59:59.000Z

13

Fast flux locked loop  

DOE Patents (OSTI)

A flux locked loop for providing an electrical feedback signal, the flux locked loop employing radio-frequency components and technology to extend the flux modulation frequency and tracking loop bandwidth. The flux locked loop of the present invention has particularly useful application in read-out electronics for DC SQUID magnetic measurement systems, in which case the electrical signal output by the flux locked loop represents an unknown magnetic flux applied to the DC SQUID.

Ganther, Jr., Kenneth R. (Olathe, KS); Snapp, Lowell D. (Independence, MO)

2002-09-10T23:59:59.000Z

14

Interactive design of urban spaces using geometrical and behavioral modeling  

Science Conference Proceedings (OSTI)

The main contribution of our work is in closing the loop between behavioral and geometrical modeling of cities. Editing of urban design variables is performed intuitively and visually using a graphical user interface. Any design variable can be constrained ... Keywords: 3D models, editing, interactive, urban spaces

Carlos A. Vanegas; Daniel G. Aliaga; Bed?ich Bene; Paul A. Waddell

2009-12-01T23:59:59.000Z

15

Flexible urbanism  

E-Print Network (OSTI)

This thesis seeks to find a new approach/method towards urbanization in existing low density neighborhoods in major metropolitan cities in the United States. The near South side of the city of Chicago (a city that carries ...

Anandam, Anahita

2006-01-01T23:59:59.000Z

16

Urban hopper.  

SciTech Connect

Hopping robots provide the possibility of breaking the link between the size of a ground vehicle and the largest obstacle that it can overcome. For more than a decade, DARPA and Sandia National Laboratories have been developing small-scale hopping robot technology, first as part of purely hopping platforms and, more recently, as part of platforms that are capable of both wheeled and hopping locomotion. In this paper we introduce the Urban Hopper robot and summarize its capabilities. The advantages of hopping for overcoming certain obstacles are discussed. Several configurations of the Urban Hopper are described, as are intelligent capabilities of the system. Key challenges are discussed.

Xavier, Patrick Gordon; Feddema, John Todd; Little, Charles Quentin; Spletzer, Barry Louis; Fischer, Gary John; Weagle, Christian A. (Boston Dynamics Waltham, MA); Salton, Jonathan Robert; Marron, Lisa Carol; Malchano, Matthew D. (Boston Dynamics Waltham, MA); Giarrantana, John (Boston Dynamics Waltham, MA); Murphy, Michael P. (Boston Dynamics Waltham, MA); Rizzi, Alfred A. (Boston Dynamics Waltham, MA); Buerger, Stephen P.

2010-03-01T23:59:59.000Z

17

Software: LoopDA  

Science Conference Proceedings (OSTI)

... The method employed is based largely upon the Loop Equation Design Method that provides for sizing of openings to utilize driving wind and stack ...

2013-03-18T23:59:59.000Z

18

Loop Equation in Turbulence  

E-Print Network (OSTI)

The incompressible fluid dynamics is reformulated as dynamics of closed loops $C$ in coordinate space. This formulation allows to derive explicit functional equation for the generating functional $\\Psi[C]$ in inertial range of spatial scales, which allows the scaling solutions. The requirement of finite energy dissipation rate leads then to the Kolmogorov index. We find an exact steady solution of the loop equation in inertial range of the loop sizes. The generating functional decreases as $\\EXP{-A^{\\tt}}$ where $A=\\oint_C r \\wedge dr$ is the area inside the loop. The pdf for the velocity circulation $\\Gamma$ is Lorentzian, with the width $\\bar{\\Gamma} \\propto A^{\\tt} $.

Alexander A. Migdal

1993-03-23T23:59:59.000Z

19

flow_loop.indd  

NLE Websites -- All DOE Office Websites (Extended Search)

FLOW ASSURANCE TEST LOOP FLOW ASSURANCE TEST LOOP Objective O ver a decade ago, RMOTC began cooperatively building a full-scale facility to test new fl ow assurance technology, mainly in the areas of hydrates and paraffi ns. Today, RMOTC's test facility consists of fi ve individual loop sections, including chilling and heated pipe-in-pipe water sections, bare lines, and a mixing section. The facility was designed to represent typical deepwater production systems in order to simulate full-scale tests and apply the results to fl ow assurance fi eld applications and technology. The current facility design consists of a 6" x 3,600 maximum allowable operating pressure test pipeline in fi ve separate loops. The test loops begin and ter- minate at a central location just north

20

Loose Loops Sink Chips  

E-Print Network (OSTI)

This paper explores the concept of micro-architectural loops and discusses their impact on processor pipelines. In particular, we establish the relationship between loose loops and pipeline length and configuration, and show their impact on performance. We then evaluate the load resolution loop in detail and propose the distributed register algorithm (DRA) as a way of reducing this loop. It decreases the performance loss due to load mis-speculations by reducing the issue-to-execute latency in the pipeline. A new loose loop is introduced into the pipeline by the DRA, but the frequency of mis-speculations is very low. The reduction in latency from issue to execute, along with a low mis-speculation rate in the DRA result in up to a 4% to 15% improvement in performance using a detailed architectural simulator.

Eric Borch Intel; Eric Borch; Eric Tune; Srilatha Manne; Joel Emer

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Loose loops sink chips  

E-Print Network (OSTI)

This paper explores the concept of micro-architectural loops and discusses their impact on processor pipelines. In particular, we establish the relationship between loose loops and pipeline length and configuration, and show their impact on performance. We then evaluate the load resolution loop in detail and propose the distributed register algorithm (DRA) as a way of reducing this loop. It decreases the performance loss due to load mis-speculations by reducing the issue-to-execute latency in the pipeline. A new loose loop is introduced into the pipeline by the DRA, but the frequency of mis-speculations is very low. The reduction in latency from issue to execute, along with a low mis-speculation rate in the DRA result in up to a 4 % to 15% improvement in performance using a detailed architectural simulator. 1

Eric Borch; Eric Tune; Srilatha Manne; Joel Emer; Stage N

2002-01-01T23:59:59.000Z

22

Performance Characterization - 1999 Toyota RAV4 EV - Inductive  

NLE Websites -- All DOE Office Websites (Extended Search)

Pomona loop and an average sound intensity of 70.3 decibels on the freeway Pomona loop. Wind and road noise play a major part in the increased test readings for the freeway...

23

Wireless Local Loop  

Science Conference Proceedings (OSTI)

Wireless local loop systems are available to provide both broadband and narrowband services to customers. Narrowband systems are generally either based on cordless or mobile standards, or a manufacturers proprietary technology. They are generally ...

R. P. Merrett; P. V. E. Beastall; S. J. Buttery

1998-10-01T23:59:59.000Z

24

Pomona, California -- Center for Regenerative Studies [Roots  

E-Print Network (OSTI)

regenerative" technologies those that turn both self-renewing resources (such as sunlight, wind and rain) and wastes into usable food, water and energy.

Bressi, Todd W

1995-01-01T23:59:59.000Z

25

COLD TEST LOOP INTEGRATED TEST LOOP RESULTS  

Science Conference Proceedings (OSTI)

A testing facility (Cold Test Loop) was constructed and operated to demonstrate the efficacy of the Accelerated Waste Retrieval (AWR) Project's planned sluicing approach to the remediation of Silos 1 and 2 at the Fernald Environmental Management Project near Cincinnati, Ohio. The two silos contain almost 10,000 tons of radium-bearing low-level waste, which consists primarily of solids of raffinates from processing performed on ores from the Democratic Republic of Congo (commonly referred to as ''Belgium Congo ores'') for the recovery of uranium. These silos are 80 ft in diameter, 36 ft high to the center of the dome, and 26.75 ft to the top of the vertical side walls. The test facility contained two test systems, each designed for a specific purpose. The first system, the Integrated Test Loop (ITL), a near-full-scale plant including the actual equipment to be installed at the Fernald Site, was designed to demonstrate the sluicing operation and confirm the selection of a slurry pump, the optimal sluicing nozzle operation, and the preliminary design material balance. The second system, the Component Test Loop (CTL), was designed to evaluate many of the key individual components of the waste retrieval system over an extended run. The major results of the initial testing performed during July and August 2002 confirmed that the AWR approach to sluicing was feasible. The ITL testing confirmed the following: (1) The selected slurry pump (Hazleton 3-20 type SHW) performed well and is suitable for AWR application. However, the pump's motor should be upgraded to a 200-hp model and be driven by a 150-hp variable-frequency drive (VFD). A 200-hp VFD is not much more expensive and would allow the pump to operate at full speed. (2) The best nozzle performance was achieved by using 15/16-in. nozzles operated alternately. This configuration appeared to most effectively mine the surrogate. (3) The Solartron densitometer, which was tested as an alternative mass flow measurement device, did not operate effectively. Consequently, it is not suitable for application to the AWR process. (4) Initially, the spray ring (operated at approximately 2300 psi) and the nozzles provided by the pump vendor did not perform acceptably. The nozzles were replaced with a more robust model, and the performance was then acceptable. (5) The average solids concentration achieved in the slurry before Bentogrout addition was approximately 16% by weight. The solids concentration of the slurry after Bentogrout addition ranged from 26% to approximately 40%. The slurry pump and ITL system performed well at every concentration. No line plugging or other problems were noted. The results of the CTL runs and later ITL testing are summarized in an appendix to this report.

Abraham, TJ

2003-10-22T23:59:59.000Z

26

Time-Constrained Loop Pipelining  

Science Conference Proceedings (OSTI)

This paper addresses the problem of Time-Constrained Loop Pipelining, i.e. given a fixed throughput, finding a schedule of a loop which minimizes resource requirements. This paper proposes a methodology, called TCLP, based on dividing the problem into ... Keywords: loop pipelining, scheduling, timing and resource contraints, register optimization

Fermin Sanchez

1995-12-01T23:59:59.000Z

27

Lectures on loop gravity  

E-Print Network (OSTI)

This is the first version of the introductory lectures on loop quantum gravity that I will give at the quantum gravity school in Zakopane. The theory is presented in self-contained form, without emphasis on its derivation from classical general relativity. Dynamics is given in the covariant form. The approximations needed to compute physical quantities are discussed. Some applications are described, including the recent derivation of de Sitter cosmology from full quantum gravity.

Rovelli, Carlo

2011-01-01T23:59:59.000Z

28

Molten salt test loop  

DOE Green Energy (OSTI)

The objective of the Molten Salt Test Loop Project was to design, construct, and demonstrate operation of an outdoor high temperature molten salt test facility. This facility is operational, and can now be used to evaluate materials and components, and the design features and operating procedures required for molten salt heat transport systems. The initial application of the loop was to demonstrate the feasibility of using molten salt as the heat transport medium for a high temperature distributed collector system. A commercially available eutectic salt blend is used as the heat transfer fluid. This salt has a composition of 40% NaNO/sub 2/, 7% NaNO/sub 3/, and 53% KNO/sub 3/ and is marketed under the trade name Hitec. It has a freezing (solidifying) point of 142/sup 0/C (288/sup 0/F) and has been satisfactorily used at temperatures as high as 594/sup 0/C (1100/sup 0/F). General Atomic (GA) installed a row of Fixed Mirror Solar Concentrators (FMSC's) in the loop. The system was started up and a test program conducted. Startup went smoothly, with the exception of some burned-out trace heaters. Salt temperatures as high as 571/sup 0/C (1060/sup 0/F) were achieved.

Schuster, J.R.; Eggers, G.H.

1980-01-01T23:59:59.000Z

29

The Promise of Urban Science  

Science Conference Proceedings (OSTI)

The Promise of Urban Science. Purpose: ... Speakers: Steven E. Koonin Director NYU Center for Urban Science and Progress. Details: ...

2013-08-19T23:59:59.000Z

30

Powers of Elements in Jordan Loops  

E-Print Network (OSTI)

A Jordan loop is a commutative loop satisfying the Jordan identity $(x^2 y) x = x^2 (y x)$. We establish several identities involving powers in Jordan loops and show that there is no nonassociative Jordan loop of order $9$.

Pula, Kyle

2010-01-01T23:59:59.000Z

31

Complete Urban Surface Temperatures  

Science Conference Proceedings (OSTI)

An observation program using ground and airborne thermal infrared radiometers is used to estimate the surface temperature of urban areas, taking into account the total active surface area. The authors call this the complete urban surface ...

J. A. Voogt; T. R. Oke

1997-09-01T23:59:59.000Z

32

Coupled dual loop absorption heat pump  

DOE Patents (OSTI)

A coupled dual loop absorption system which utilizes two separate complete loops. Each individual loop operates at three temperatures and two pressures. This low temperature loop absorber and condenser are thermally coupled to the high temperature loop evaporator, and the high temperature loop condenser and absorber are thermally coupled to the low temperature generator.

Sarkisian, Paul H. (Watertown, MA); Reimann, Robert C. (Lafayette, NY); Biermann, Wendell J. (Fayetteville, NY)

1985-01-01T23:59:59.000Z

33

REACTOR MAIN COOLANT LOOP  

SciTech Connect

A parametric study was made for the POPR with temperature gradients of 610 to 670 deg F and 6l0 to 684.5 deg F at organic flow rates of 17.8 x l0/sup 6/ and l4.4 x l0/sup 6/ lbs/hr, respectively; and steam turbine conditions at the throttle of 600 and 650 deg F at 800 to l200 psig. The study was made to obtain the most economical layout of the main heat transfer loop system. (B.O.G.)

Terpe, G.R.; Katz, B.

1961-08-01T23:59:59.000Z

34

Uranyl Nitrate Flow Loop  

Science Conference Proceedings (OSTI)

The objectives of the work discussed in this report were to: (1) develop a flow loop that would simulate the purified uranium-bearing aqueous stream exiting the solvent extraction process in a natural uranium conversion plant (NUCP); (2) develop a test plan that would simulate normal operation and disturbances that could be anticipated in an NUCP; (3) use the flow loop to test commercially available flowmeters for use as safeguards monitors; and (4) recommend a flowmeter for production-scale testing at an NUCP. There has been interest in safeguarding conversion plants because the intermediate products [uranium dioxide (UO{sub 2}), uranium tetrafluoride (UF{sub 4}), and uranium hexafluoride (UF{sub 6})] are all suitable uranium feedstocks for producing special nuclear materials. Furthermore, if safeguards are not applied virtually any nuclear weapons program can obtain these feedstocks without detection by the International Atomic Energy Agency (IAEA). Historically, IAEA had not implemented safeguards until the purified UF{sub 6} product was declared as feedstock for enrichment plants. H. A. Elayat et al. provide a basic definition of a safeguards system: 'The function of a safeguards system on a chemical conversion plant is in general terms to verify that no useful nuclear material is being diverted to use in a nuclear weapons program'. The IAEA now considers all highly purified uranium compounds as candidates for safeguarding. DOE is currently interested in 'developing instruments, tools, strategies, and methods that could be of use to the IAEA in the application of safeguards' for materials found in the front end of the nuclear fuel cycle-prior to the production of the uranium hexafluoride or oxides that have been the traditional starting point for IAEA safeguards. Several national laboratories, including Oak Ridge, Los Alamos, Lawrence Livermore, and Brookhaven, have been involved in developing tools or techniques for safeguarding conversion plants. This study was sponsored by the U.S. Department of Energy (DOE) NA-241, Office of Dismantlement and Transparency.

Ladd-Lively, Jennifer L [ORNL

2008-10-01T23:59:59.000Z

35

Fusion of Loops for Parallelism and Locality  

Science Conference Proceedings (OSTI)

AbstractLoop fusion improves data locality and reduces synchronization in data-parallel applications. However, loop fusion is not always legal. Even when legal, fusion may introduce loop-carried dependences which prevent parallelism. In addition, performance ... Keywords: Locality enhancement, loop fusion, cache conflicts, loop transformations, data-parallel applications, scalable shared-memory multiprocessors.

Naraig Manjikian; Tarek S. Abdelrahman

1997-02-01T23:59:59.000Z

36

Chemical Looping | Open Energy Information  

Open Energy Info (EERE)

Looping Looping Jump to: navigation, search Contents 1 Introduction 2 Process Description 3 Benefits 4 Oxygen Carriers 5 Multimedia 6 Patents 7 References 8 External Links Introduction Chemical looping or chemical looping combustion (CLC) is a novel technology that could provide the means to convert fossil fuels to electricity and provide carbon capture without significant efficiency or cost penalties. Chemical looping combustion is very similar to oxy-fuel combustion where there is no direct contact between air and fuel.[1] Oxygen is extracted from air, then the oxygen is reacted with the hydrocarbon fuel producing an exhaust gas composed of carbon dioxide and water vapor.[2] The water vapor is condensed out of the gas resulting in near 100% carbon dioxide stream that could be sequestered in the ground.

37

Urban food waste composting.  

E-Print Network (OSTI)

??In this thesis, a study was undertaken on the premise that the world population living in urban centers is expected to increase from 3.8 billion (more)

Adhikari, Bijaya K.

2005-01-01T23:59:59.000Z

38

Loop-deformed Poincar algebra  

E-Print Network (OSTI)

In this essay we present evidence suggesting that loop quantum gravity leads to deformation of the local Poincar\\'e algebra within the limit of high energies. This deformation is a consequence of quantum modification of effective off-shell hypersurface deformation algebra. Surprisingly, the form of deformation suggests that the signature of space-time changes from Lorentzian to Euclidean at large curvatures. We construct particular realization of the loop-deformed Poincar\\'e algebra and find that it can be related to curved momentum space, which indicates the relationship with recently introduced notion of relative locality. The presented findings open a new way of testing loop quantum gravity effects.

Jakub Mielczarek

2013-04-08T23:59:59.000Z

39

The calculus of looping sequences  

Science Conference Proceedings (OSTI)

We describe the Calculus of Looping Sequences (CLS) which is suitable for modeling microbiological systems and their evolution. We present two extensions, CLS with links (LCLS) and Stochastic CLS. LCLS simplifies the description of protein interaction ...

Roberto Barbuti; Giulio Caravagna; Andrea Maggiolo-Schettini; Paolo Milazzo; Giovanni Pardini

2008-06-01T23:59:59.000Z

40

Time-Constrained Loop Pipelining  

E-Print Network (OSTI)

This paper addresses the problem of Time-Constrained Loop Pipelining, i.e. given a fixed throughput, finding a schedule of a loop which minimizes resource requirements. We propose a methodology, called TCLP, based on dividing the problem into two simpler and independent tasks: retiming and scheduling. TCLP explores different sets of resources, searchingfor a maximum resource utilization. This reduces area requirements. After a minimum set of resourceshas been found, the execution throughput is increased and the number of registers required by the loop schedule is reduced. TCLP attempts to generate a schedule which minimizes cost in time and area (resources and registers). The results show that TCLP obtains optimal schedules in most cases. 1 Introduction This paper presents TCLP, a methodology to solve TimeConstrained Loop Pipelining. TCLP is NP-complete [3]. Two types of timing constraints (TCs) have been considered in the literature: local TCs to specify minimum and/or maximum TCs ...

Fermn Sanchez; Jordi Cortadella

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Introduction to Loop Quantum Gravity  

E-Print Network (OSTI)

The questions I have been asked during the 5th International School on Field Theory and Gravitation, have compelled me to give an account of the premises that I consider important for a beginner's approach to Loop Quantum Gravity. After a description of some general arguments and an introduction to the canonical theory of gravity, I review the background independent approach to quantum gravity, giving only a brief survey of Loop Quantum Gravity.

Mercuri, Simone

2010-01-01T23:59:59.000Z

42

Introduction to Loop Quantum Gravity  

E-Print Network (OSTI)

The questions I have been asked during the 5th International School on Field Theory and Gravitation, have compelled me to give an account of the premises that I consider important for a beginner's approach to Loop Quantum Gravity. After a description of some general arguments and an introduction to the canonical theory of gravity, I review the background independent approach to quantum gravity, giving only a brief survey of Loop Quantum Gravity.

Simone Mercuri

2010-01-08T23:59:59.000Z

43

EA-1885: Boston Architectural College's Urban Sustainability Initiative  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

85: Boston Architectural College's Urban Sustainability 85: Boston Architectural College's Urban Sustainability Initiative Renovation of Green Alley #444, Boston, Massachusetts EA-1885: Boston Architectural College's Urban Sustainability Initiative Renovation of Green Alley #444, Boston, Massachusetts Summary This EA evaluates the environmental impacts of a proposal to provide a grant to Boston Architectural College (BAC) to design, construct and implement the renovation of Public Alley #444 in Boston's Historic Back Bay District. The project would include the installation of 7 to 10 open loop geothermal wells to provide heating and cooling energy to BAC's facilities; the installation of a green screen trellis system, planting soils, concrete pavement, pavers, and landscaping; and mechanical upgrades (plumbing and electrical) to accommodate the geothermal solution into the

44

EA-1885: Boston Architectural College's Urban Sustainability Initiative  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

85: Boston Architectural College's Urban Sustainability 85: Boston Architectural College's Urban Sustainability Initiative Renovation of Green Alley #444, Boston, Massachusetts EA-1885: Boston Architectural College's Urban Sustainability Initiative Renovation of Green Alley #444, Boston, Massachusetts Summary This EA evaluates the environmental impacts of a proposal to provide a grant to Boston Architectural College (BAC) to design, construct and implement the renovation of Public Alley #444 in Boston's Historic Back Bay District. The project would include the installation of 7 to 10 open loop geothermal wells to provide heating and cooling energy to BAC's facilities; the installation of a green screen trellis system, planting soils, concrete pavement, pavers, and landscaping; and mechanical upgrades (plumbing and electrical) to accommodate the geothermal solution into the

45

Fuzzy model in urban planning  

Science Conference Proceedings (OSTI)

This paper presents application of a fuzzy logic in urban planning. Urban environment quality evaluation is an important part of environmental planning and management. Traditional theory does not give as good evaluation as the fuzzy set theory, which ... Keywords: GIS, fuzzy logic, urban evaluation, urban planning

Jasna Pleho; Zikrija Avdagic

2008-05-01T23:59:59.000Z

46

Free loop spaces in topology and  

E-Print Network (OSTI)

Free loop spaces in topology and physics Kathryn Hess What is the space of free loops? Enumeration of geodesics Hochschild and cyclic homology Homological conformal field theories Free loop spaces in topology Meeting of the Edinburgh Mathematical Society Glasgow, 14 November 2008 #12;Free loop spaces in topology

Thévenaz, Jacques

47

Field Operations Program, Toyota PRIUS Hybrid Electric Vehicle Performance Characterization Report  

DOE Green Energy (OSTI)

The U.S. Department of Energys Field Operations Program evaluates advanced technology vehicles in real-world applications and environments. Advanced technology vehicles include pure electric, hybrid electric, hydrogen, and other vehicles that use emerging technologies such as fuel cells. Information generated by the Program is targeted to fleet managers and others considering the deployment of advanced technology vehicles. As part of the above activities, the Field Operations Program has initiated the testing of the Toyota Prius hybrid electric vehicle (HEV), a technology increasingly being considered for use in fleet applications. This report describes the Pomona Loop testing of the Prius, providing not only initial operational and performance information, but also a better understanding of HEV testing issues. The Pomona Loop testing includes both Urban and Freeway drive cycles, each conducted at four operating scenarios that mix minimum and maximum payloads with different auxiliary (e.g., lights, air conditioning) load levels.

Francfort, James Edward; Nguyen, N.; Phung, J.; Smith, J.; Wehrey, M.

2001-12-01T23:59:59.000Z

48

Advanced Vehicle Testing Activity: Urban Electric Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

Urban Electric Vehicles to someone by E-mail Share Advanced Vehicle Testing Activity: Urban Electric Vehicles on Facebook Tweet about Advanced Vehicle Testing Activity: Urban...

49

Advanced Vehicle Testing Activity: Urban Electric Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

Urban Electric Vehicles Toyota Urban Electric Vehicle Urban electric vehicles (UEVs) are regular passenger vehicles with top speeds of about 60 miles per hour (mph) and a...

50

Towards sustainable urban communities  

Science Conference Proceedings (OSTI)

Requirements for the assessment tools of buildings have increased, assessing of building components or separate buildings is not enough. Neighbourhoods, built environment, public transportations, and services, should be considered simultaneously. Number of population living in urban areas is high and increasing rapidly. Urbanisation is a major concern due to its detrimental effects on the environment. The aim of this study is to clarify the field of assessment tools for urban communities by analysing the current situation. The focus is on internationally well known assessment tools; BREEAM Communities, CASBEE for Urban Development and LEED for Neigborhood Development. The interest towards certification systems is increasing amongst the authorities, and especially amongst the global investors and property developers. Achieved certifications are expected to bring measureable publicity for the developers. The assessment of urban areas enables the comparison of municipalities and urban areas, and notably supports decision making processes. Authorities, city planners, and designers would benefit most from the use of the tools during the decision making process. - Highlights: Black-Right-Pointing-Pointer The urban assessment tools have strong linkage to the region. Black-Right-Pointing-Pointer The tools promote complementary building and retrofitting existing sites. Black-Right-Pointing-Pointer Sharing knowledge and experiences is important in the development of the tools.

Haapio, Appu, E-mail: appu.haapio@vtt.fi

2012-01-15T23:59:59.000Z

51

Loop Current and Deep Eddies  

Science Conference Proceedings (OSTI)

In contrast to the Loop Current and rings, much less is known about deep eddies (deeper than 1000 m) of the Gulf of Mexico. In this paper, results from a high-resolution numerical model of the Gulf are analyzed to explain their origin and how ...

L-Y. Oey

2008-07-01T23:59:59.000Z

52

Urban Song Paths: place resounding  

Science Conference Proceedings (OSTI)

The project Urban Song Paths took a traditional musical form, the Kaluli song path from Papua, New Guinea, and translated it for a contemporary urban situation. The Two Rivers Project explored a classic song path subject, the route of a ...

Viv Corringham

2006-04-01T23:59:59.000Z

53

Building Energy Software Tools Directory: Ground Loop Design  

NLE Websites -- All DOE Office Websites (Extended Search)

Loop Design Ground Loop Design logo Ground Loop Design is a versatile ground source heat pump system design program that helps the trained geothermal HVAC designerengineer...

54

A sustainable urban center refurbishment  

Science Conference Proceedings (OSTI)

During the last century a vast new building construction activity was verified. The old urban centers were abandoned and new housing areas grew up without comply with sustainable principles. The great architectural and urban value of these centers led ... Keywords: indicators, refurbishment, sustainability, urban center

Ana Karina Lopes; Fernanda Rodrigues; Victor M. Ferreira; Romeu Vicente

2011-02-01T23:59:59.000Z

55

Hard thermal loops in static external fields  

E-Print Network (OSTI)

We study, in the imaginary-time formalism, the high temperature behavior of n-point thermal loops in static Yang-Mills and gravitational fields. We show that in this regime, any hard thermal loop gives the same leading contribution as the one obtained by evaluating the loop at zero external energies and momenta.

Frenkel, J; Takahashi, N

2009-01-01T23:59:59.000Z

56

Pack.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

February 1999 February 1999 Revised: 05/05/99 CHEVROLET S-10 ELECTRIC (NIMH BATTERIES) PERFORMANCE CHARACTERIZATION SUMMARY ELECTRIC TRANSPORTATION DIVISION Urban Range (On Urban Pomona Loop - see other side for map) Test UR1 UR2 UR3 UR4 Payload (lb.) 180 180 920 920 AC kWh Recharge 54.93 57.09 54.98 51.34 AC kWh/mi. 0.78 0.91 0.87 0.85 Range (mi.) 70.4 63.0 63.0 60.4 Avg. Ambient Temp. 63°F 66°F 63°F 50°F UR1 Urban Range Test, Min Payload, No Auxiliary Loads UR2 Urban Range Test, Min Payload, A/C on High, Headlights on Low, Radio On UR3 Urban Range Test, Max Payload, No Auxiliary Loads UR4 Urban Range Test, Max Payload, A/C on High, Headlights on Low, Radio On State of Charge Meter (UR1) Freeway Range (On Freeway Pomona Loop - see other side for map) Test FW1 FW2 FW3 FW4 Payload (lb.) 180 180 920 920 AC kWh Recharge

57

The urban coffee shop  

E-Print Network (OSTI)

This thesis is an investigation of the role of the coffee shop in the urban environment throughout history. Coffee shops spread from the Arab world to Europe and then to the U.S. at the end of the seventeenth century. ...

Chadios, Konstantinos

2005-01-01T23:59:59.000Z

58

Computationally unifying urban masterplanning  

Science Conference Proceedings (OSTI)

Architectural design, particularly in large scale masterplanning projects, has yet to fully undergo the computational revolution experienced by other design-led industries such as automotive and aerospace. These industries use computational frameworks ... Keywords: architectural analysis, architectural design, engineering analysis, unification, urban masterplanning

David Birch; Paul H. J. Kelly; Anthony J. Field; Alvise Simondetti

2013-05-01T23:59:59.000Z

59

Chemical Looping for Combustion and Hydrogen Production  

NLE Websites -- All DOE Office Websites (Extended Search)

ChemiCal looping for Combustion and ChemiCal looping for Combustion and hydrogen produCtion Objective The objective of this project is to determine the benefits of chemical looping technology used with coal to reduce CO 2 emissions. Background Chemical looping is a new method to convert coal or gasified coal to energy. In chemical looping, there is no direct contact between air and fuel. The chemical looping process utilizes oxygen from metal oxide oxygen carrier for fuel combustion, or for making hydrogen by "reducing" water. In combustion applications, the products of chemical looping are CO 2 and H 2 O. Thus, once the steam is condensed, a relatively pure stream of CO 2 is produced ready for sequestration. The production of a sequestration ready CO 2 stream does not require any additional separation units

60

High-temperature helium-loop facility  

Science Conference Proceedings (OSTI)

The high-temperature helium loop is a facility for materials testing in ultrapure helium gas at high temperatures. The closed loop system is capable of recirculating high-purity helium or helium with controlled impurities. The gas loop maximum operating conditions are as follows: 300 psi pressure, 500 lb/h flow rate, and 2100/sup 0/F temperature. The two test sections can accept samples up to 3.5 in. diameter and 5 ft long. The gas loop is fully instrumented to continuously monitor all parameters of loop operation as well as helium impurities. The loop is fully automated to operate continuously and requires only a daily servicing by a qualified operator to replenish recorder charts and helium makeup gas. Because of its versatility and high degree of parameter control, the helium loop is applicable to many types of materials research. This report describes the test apparatus, operating parameters, peripheral systems, and instrumentation system.

Tokarz, R.D.

1981-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Evaluation of a Fast-Running Urban Dispersion Modeling System Using Joint Urban 2003 Field Data  

Science Conference Proceedings (OSTI)

An urban dispersion modeling system was evaluated using the Joint Urban 2003 field data. The system consists of a fast-running urban airflow model (RUSTIC, for Realistic Urban Spread and Transport of Intrusive Contaminants) that is coupled with a ...

Eric A. Hendricks; Steve R. Diehl; Donald A. Burrows; Robert Keith

2007-12-01T23:59:59.000Z

62

Urban Network Practices  

Science Conference Proceedings (OSTI)

This report describes the findings of an underground distribution practices immersion conducted by the Electric Power Research Institute (EPRI) with Duke Energy Ohio. This immersion was conducted as part of a multiyear effort by EPRI to identify noteworthy practices in managing urban network systems. More specifically, this report profiles the practices (people, processes, and technology) in place at Duke Energy Ohio, a company serving the Cincinnati, Ohio, metropolitan area. In addition, this report hig...

2011-03-31T23:59:59.000Z

63

Urban Network System Practices  

Science Conference Proceedings (OSTI)

This report describes the results of Phase I of a multi-year effort to identify noteworthy practices in managing urban network systems. The report profiles the practices (people, processes, and technology) in place at two host utilities: Seattle City Light (SCL), a small (375,000 customers) municipal utility, and Consolidated Edison (Con Edison), a large (3.2 million customers) investor-owned utility. The results illustrate the similarities and differences between the two utilities, describe the challeng...

2008-07-23T23:59:59.000Z

64

Urban Network Practices  

Science Conference Proceedings (OSTI)

This report describes the findings of an underground distribution practices immersion conducted by the Electric Power Research Institute (EPRI) with National Grid. This immersion was conducted as part of a multiyear effort by EPRI to identify noteworthy practices in managing urban network systems. National Grid's U.S. operations, headquartered in Waltham, Massachusetts, serves customers through secondary network systems in multiple cities in New York and New England. This report profiles the practices (p...

2012-02-16T23:59:59.000Z

65

Urban Network Systems Practices  

Science Conference Proceedings (OSTI)

This report describes the findings of an underground distribution practices immersion conducted by the Electric Power Research Institute (EPRI) with CenterPoint Energy (CenterPoint). This immersion was conducted as part of a multiyear effort by EPRI to identify noteworthy practices in managing urban network systems. The report profiles the practices (that is, people, processes, and technology) in place at CenterPoint, a company serving the Houston, Texas, metropolitan area. This report is one of a serie...

2010-12-02T23:59:59.000Z

66

Video looping of human cyclic motion  

E-Print Network (OSTI)

In this thesis, a system called Video Looping is developed to analyze human cyclic motions. Video Looping allows users to extract human cyclic motion from a given video sequence. This system analyzes similarities from a large amount of live footage to find the point of smooth transition. The final cyclic loop is created using only a few output images. Video Looping is useful not only to learn and understand human movements, but also to apply the cyclic loop to various artistic applications. To provide practical animation references, the output images are presented as photo plate sequences to visualize human cyclic motion similar to Eadweard Muybridge's image sequences. The final output images can be used to create experimental projects such as composited multiple video loops or small size of web animations. Furthermore, they can be imported into animation packages, and animators can create keyframe animations by tracing them in 3D software.

Choi, Hye Mee

2006-05-01T23:59:59.000Z

67

A Study of the Urban Boundary Layer Using Different Urban Parameterizations and High-Resolution Urban Canopy Parameters with WRF  

Science Conference Proceedings (OSTI)

In the last two decades, mesoscale models (MMs) with urban canopy parameterizations have been widely used to study urban boundary layer processes. Different studies show that such parameterizations are sensitive to the urban canopy parameters (...

Francisco Salamanca; Alberto Martilli; Mukul Tewari; Fei Chen

2011-05-01T23:59:59.000Z

68

Magnetic monopole in the loop representation  

Science Conference Proceedings (OSTI)

We quantize, within the Loop Representation formalism, the electromagnetic field in the presence of a static magnetic pole. It is found that the loop-dependent physical wave functionals of the quantum Maxwell theory become multivalued, through a topological phase factor depending on the solid angle subtended at the monopole by a surface bounded by the loop. It is discussed how this fact generalizes what occurs in ordinary quantum mechanics in multiply connected spaces.

Leal, Lorenzo; Lopez, Alexander [Grupo de Campos y Particulas, Departamento de Fisica, Facultad de Ciencias, Universidad Central de Venezuela, AP 47270, Caracas 1041-A (Venezuela); Centro de Fisica, Instituto Venezolano de Investigaciones Cientificas, AP 21827, Caracas 1020-A, Venezuela, and Grupo de Campos y Particulas, Departamento de Fisica, Facultad de Ciencias, Universidad Central de Venezuela (Venezuela)

2006-01-15T23:59:59.000Z

69

LMFBR with booster pump in pumping loop  

DOE Patents (OSTI)

A loop coolant circulation system is described for a liquid metal fast breeder reactor (LMFBR) utilizing a low head, high specific speed booster pump in the hot leg of the coolant loop with the main pump located in the cold leg of the loop, thereby providing the advantages of operating the main pump in the hot leg with the reliability of cold leg pump operation.

Rubinstein, H.J.

1975-10-14T23:59:59.000Z

70

Coal Direct Chemical Looping (CDCL) Process Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Coal Direct Chemical Looping (CDCL) Retrofit to Pulverized Coal Power Plants for In-Situ CO 2 Capture William G. Lowrie Department of Chemical & Biomolecular Engineering The Ohio...

71

Aircraft Thermal Management Using Loop Heat Pipes.  

E-Print Network (OSTI)

??The objective of this thesis was to determine the feasibility of using loop heat pipes to dissipate waste heat from power electronics to the skin (more)

Fleming, Andrew J.

2009-01-01T23:59:59.000Z

72

Local Climate Zones for Urban Temperature Studies  

Science Conference Proceedings (OSTI)

The effect of urban development on local thermal climate is widely documented in scientific literature. Observations of urbanrural air temperature differencesor urban heat islands (UHIs)have been reported for cities and regions worldwide, often with ...

I. D. Stewart; T. R. Oke

2012-12-01T23:59:59.000Z

73

UWB communication receiver feedback loop  

DOE Patents (OSTI)

A novel technique and structure that maximizes the extraction of information from reference pulses for UWB-TR receivers is introduced. The scheme efficiently processes an incoming signal to suppress different types of UWB as well as non-UWB interference prior to signal detection. Such a method and system adds a feedback loop mechanism to enhance the signal-to-noise ratio of reference pulses in a conventional TR receiver. Moreover, sampling the second order statistical function such as, for example, the autocorrelation function (ACF) of the received signal and matching it to the ACF samples of the original pulses for each transmitted bit provides a more robust UWB communications method and system in the presence of channel distortions.

Spiridon, Alex (Palo Alto, CA); Benzel, Dave (Livermore, CA); Dowla, Farid U. (Castro Valley, CA); Nekoogar, Faranak (San Ramon, CA); Rosenbury, Erwin T. (Castro Valley, CA)

2007-12-04T23:59:59.000Z

74

OPPORTUNITY COST OF LAND AND URBAN GROWTH.  

E-Print Network (OSTI)

??This study examines the impact of the opportunity cost of urban land on urban growth. Based on prices, costs and productivity data on agricultural commodities (more)

Jiang, Bo

2011-01-01T23:59:59.000Z

75

Waste Landscapes: [Re]valuing Urban Marginalia.  

E-Print Network (OSTI)

??Cities in North America are undergoing an organizational shift as urbanization increasingly expands outward, horizontally and diffusely. Left in the wake of decentralization and urban (more)

Claus, Eric R.

2010-01-01T23:59:59.000Z

76

Slack analysis in the system design loop  

Science Conference Proceedings (OSTI)

We present a system-level technique to analyze the impact of design optimizations on system-level timing dependencies. This technique enables us to speed up the design cycle by substituting, in the design the loop, the time-consuming simulation step ... Keywords: slack analysis, system design loop, timing update

Girish Venkataramani; Seth C. Goldstein

2008-10-01T23:59:59.000Z

77

Coronal loop detection from solar images  

Science Conference Proceedings (OSTI)

In this paper, we make an overview of a methodology for the automatic retrieval of images with coronal loops from the solar image data captured by the extreme-ultraviolet imaging telescope (EIT) onboard the spacecraft SOHO (Solar and Heliospheric Observatory). ... Keywords: Classification techniques, Coronal loop, Curvature feature, Data mining, Feature extraction, Image retrieval, Solar images

Nurcan Durak; Olfa Nasraoui; Joan Schmelz

2009-11-01T23:59:59.000Z

78

Hard thermal loops in static background fields  

E-Print Network (OSTI)

We discuss the high temperature behavior of retarded thermal loops in static external fields. We employ an analytic continuation of the imaginary time formalism and use a spectral representation of the thermal amplitudes. We show that, to all orders, the leading contributions of static hard thermal loops can be directly obtained by evaluating them at zero external energies and momenta.

Brandt, F T; Siqueira, J B

2013-01-01T23:59:59.000Z

79

Newtonian gravity in loop quantum gravity  

E-Print Network (OSTI)

We apply a recent argument of Verlinde to loop quantum gravity, to conclude that Newton's law of gravity emerges in an appropriate limit and setting. This is possible because the relationship between area and entropy is realized in loop quantum gravity when boundaries are imposed on a quantum spacetime.

Smolin, Lee

2010-01-01T23:59:59.000Z

80

Is the Loop Current a Chaotic Oscillator?  

Science Conference Proceedings (OSTI)

Dynamical systems theory is employed to study the irregular Loop Current in the Gulf of Mexico using a short database of shedding periods and northsouth positions of the current. Two independent tests based on these data suggest that the Loop ...

Alexis Lugo-Fernndez

2007-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Efficient Hardware Looping Units for FPGAs  

Science Conference Proceedings (OSTI)

Looping operations impose a significant bottleneck to achieving better computational efficiency for embedded applications. To confront this problem in embedded computation either in the form of programmable processors or FSMD (Finite-State Machine with ... Keywords: FPGA, embedded system, high-level synthesis, hardware looping, control unit

Nikolaos Kavvadias; Konstantinos Masselos

2010-07-01T23:59:59.000Z

82

Coal Direct Chemical Looping (CDCL) Process Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Direct Chemical Looping (CDCL) Retrofit to Direct Chemical Looping (CDCL) Retrofit to Pulverized Coal Power Plants for In-Situ CO 2 Capture William G. Lowrie Department of Chemical & Biomolecular Engineering The Ohio State University Columbus, OH 43210 Award #: DE-NT0005289 PI: Liang-Shih Fan Presenter: Samuel Bayham Department of Chemical and Biomolecular Engineering The Ohio State University 2013 NETL CO2 Capture Technology Meeting July 11, 2013 Pittsburgh, PA Clean Coal Research Laboratory at The Ohio State University Sub-Pilot Scale Unit 250kW th Pilot Unit (Wilsonville, Alabama) Syngas Chemical Looping Coal-Direct Chemical Looping Cold Flow Model Sub-Pilot Scale Unit HPHT Slurry Bubble Column 120kW th Demonstration Unit Calcium Looping Process CCR Process Sub-Pilot Unit F-T Process

83

Dual quark condensate and dressed Polyakov loops  

E-Print Network (OSTI)

We construct a new order parameter for finite temperature QCD by considering the quark condensate for U(1)-valued temporal boundary conditions for the fermions. Fourier transformation with respect to the boundary condition defines the dual condensate. This quantity corresponds to an equivalence class of Polyakov loops, thereby being an order parameter for the center symmetry. We explore the duality relation between the quark condensate and these dressed Polyakov loops numerically, using quenched lattice QCD configurations below and above the QCD phase transition. It is demonstrated that the Dirac spectrum responds differently to changing the boundary condition, in a manner that reproduces the expected Polyakov loop pattern. We find the dressed Polyakov loops to be dominated by the lowest Dirac modes, in contrast to thin Polyakov loops investigated earlier.

Erek Bilgici; Falk Bruckmann; Christof Gattringer; Christian Hagen

2008-01-28T23:59:59.000Z

84

Pomona, New York: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

8985°, -74.053709° 8985°, -74.053709° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.18985,"lon":-74.053709,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

85

Pomona, New Jersey: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

504°, -74.5751557° 504°, -74.5751557° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.4784504,"lon":-74.5751557,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

86

Novel Reactor Design for Solid Fuel Chemical Looping Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

for Solid Fuel Chemical Looping Combustion Opportunity Research is active on the patent pending technology, titled "Apparatus and Method for Solid Fuel Chemical Looping...

87

Building Technology and Urban Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Office building exterior and infrared thermograph Office building exterior and infrared thermograph Building Technology and Urban Systems Building Technology and Urban Systems application/pdf icon btus-org-chart-03-2013.pdf In the areas of Building Technology and Urban Systems, EETD researchers conduct R&D and develop physical and information technologies to make buildings and urban areas more energy- and resource-efficient. These technologies create jobs and products for the marketplace in clean technology industries. They improve quality of life, and reduce the emissions of pollutants, including climate-altering greenhouse gases. BTUSD's goal is to provide the technologies needed to operate buildings at 50 to 70 percent less energy use than average today. BTUS develops, demonstrates and deploys: Information technologies for the real-time monitoring and control of

88

Virtual urban traffic network simulator  

E-Print Network (OSTI)

In this project, I designed and implemented a virtual urban traffic network simulator. The simulator serves as a testbed for human-subject experiments to determine driver behavior in road networks and also as a platform ...

Uh, Jason (Jason J.)

2011-01-01T23:59:59.000Z

89

Analysis of large urban fires  

SciTech Connect

Fires in urban areas caused by a nuclear burst are analyzed as a first step towards determining their smoke-generation chacteristics, which may have grave implications for global-scale climatic consequences. A chain of events and their component processes which would follow a nuclear attack are described. A numerical code is currently being developed to calculate ultimately the smoke production rate for a given attack scenario. Available models for most of the processes are incorporated into the code. Sample calculations of urban fire-development history performed in the code for an idealized uniform city are presented. Preliminary results indicate the importance of the wind, thermal radiation transmission, fuel distributions, and ignition thresholds on the urban fire spread characteristics. Future plans are to improve the existing models and develop new ones to characterize smoke production from large urban fires. 21 references, 18 figures.

Kang, S.W.; Reitter, T.A.; Takata, A.N.

1984-11-01T23:59:59.000Z

90

Urban Reclamation in So Paulo  

E-Print Network (OSTI)

The urbanized terrain of So Paulo is characterized by wasteful landscapes on peripheral areas of the metropolitan agglomeration, and decaying landscapes of waste in the core of the city. If on the one hand, the increasingly ...

Eskinazi, Victor

2009-01-01T23:59:59.000Z

91

Claiming the urban industrial landscape  

E-Print Network (OSTI)

This thesis presents a propositIOn about a prevalent urban condition, that of marginal, left over, or disused space. It contends that these spaces, generally viewed as negative attributes by their communities have inherent ...

Linton, Cynthia Mayhew

1992-01-01T23:59:59.000Z

92

Hybrid Combustion-Gasification Chemical Looping  

DOE Green Energy (OSTI)

For the past several years Alstom Power Inc. (Alstom), a leading world-wide power system manufacturer and supplier, has been in the initial stages of developing an entirely new, ultra-clean, low cost, high efficiency power plant for the global power market. This new power plant concept is based on a hybrid combustion-gasification process utilizing high temperature chemical and thermal looping technology The process consists of the oxidation, reduction, carbonation, and calcination of calcium-based compounds, which chemically react with coal, biomass, or opportunity fuels in two chemical loops and one thermal loop. The chemical and thermal looping technology can be alternatively configured as (i) a combustion-based steam power plant with CO{sub 2} capture, (ii) a hybrid combustion-gasification process producing a syngas for gas turbines or fuel cells, or (iii) an integrated hybrid combustion-gasification process producing hydrogen for gas turbines, fuel cells or other hydrogen based applications while also producing a separate stream of CO{sub 2} for use or sequestration. In its most advanced configuration, this new concept offers the promise to become the technology link from today's Rankine cycle steam power plants to tomorrow's advanced energy plants. The objective of this work is to develop and verify the high temperature chemical and thermal looping process concept at a small-scale pilot facility in order to enable AL to design, construct and demonstrate a pre-commercial, prototype version of this advanced system. In support of this objective, Alstom and DOE started a multi-year program, under this contract. Before the contract started, in a preliminary phase (Phase 0) Alstom funded and built the required small-scale pilot facility (Process Development Unit, PDU) at its Power Plant Laboratories in Windsor, Connecticut. Construction was completed in calendar year 2003. The objective for Phase I was to develop the indirect combustion loop with CO{sub 2} separation, and also syngas production from coal with the calcium sulfide (CaS)/calcium sulfate (CaSO{sub 4}) loop utilizing the PDU facility. The results of Phase I were reported in Reference 1, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase I Report' The objective for Phase II was to develop the carbonate loop--lime (CaO)/calcium carbonate (CaCO{sub 3}) loop, integrate it with the gasification loop from Phase I, and ultimately demonstrate the feasibility of hydrogen production from the combined loops. The results of this program were reported in Reference 3, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase II Report'. The objective of Phase III is to operate the pilot plant to obtain enough engineering information to design a prototype of the commercial Chemical Looping concept. The activities include modifications to the Phase II Chemical Looping PDU, solids transportation studies, control and instrumentation studies and additional cold flow modeling. The deliverable is a report making recommendations for preliminary design guidelines for the prototype plant, results from the pilot plant testing and an update of the commercial plant economic estimates.

Herbert Andrus; Gregory Burns; John Chiu; Gregory Lijedahl; Peter Stromberg; Paul Thibeault

2009-01-07T23:59:59.000Z

93

LOOP CALCULUS AND BELIEF PROPAGATION FOR Q-ARY ALPHABET: LOOP TOWER  

Science Conference Proceedings (OSTI)

Loop calculus introduced in [1], [2] constitutes a new theoretical tool that explicitly expresses symbol Maximum-A-Posteriori (MAP) solution of a general statistical inference problem via a solution of the Belief Propagation (BP) equations. This finding brought a new significance to the BP concept, which in the past was thought of as just a loop-free approximation. In this paper they continue a discussion of the Loop Calculus, partitioning the results into three Sections. In Section 1 they introduce a new formulation of the Loop Calculus in terms of a set of transformations (gauges) that keeping the partition function of the problem invariant. The full expression contains two terms referred to as the 'ground state' and 'excited states' contributions. The BP equations are interpreted as a special (BP) gauge fixing condition that emerges as a special orthogonality constraint between the ground state and excited states, which also selects loop contributions as the only surviving ones among the excited states. In Section 2 they demonstrate how the invariant interpretation of the Loop Calculus, introduced in Section 1, allows a natural extension to the case of a general q-ary alphabet, this is achieved via a loop tower sequential construction. The ground level in the tower is exactly equivalent to assigning one color (out of q available) to the 'ground state' and considering all 'excited' states colored in the remaining (q-1) colors, according to the loop calculus rule. Sequentially, the second level in the tower corresponds to selecting a loop from the previous step, colored in (q-1) colors, and repeating the same ground vs excited states splitting procedure into one and (q-2) colors respectively. The construction proceeds till the full (q-1)-levels deep loop tower (and the corresponding contributions to the partition function) are established. In Section 3 they discuss an ultimate relation between the loop calculus and the Bethe-Free energy variational approach of [3].

CHERTKOV, MICHAEL [Los Alamos National Laboratory; CHERNYAK, VLADIMIR [Los Alamos National Laboratory

2007-01-10T23:59:59.000Z

94

honda.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

HONDA EV PLUS HONDA EV PLUS NIMH BATTERIES SEPTEMBER 1997 Urban Range (On Urban Pomona Loop - see other side for map) Range (mi.) Without Aux. Loads With Aux. Loads 81.7 97.7 105.3 Payload (lb.) Maximum 860 Minimum 140 UR1 UR2 UR 3 UR4 86.9 Test UR1 UR2 UR3 UR4 Payload (lb.) 140 140 860 860 AC kWh Recharge 40 43 40 45 AC kWh/mi. 0.38 0.49 0.41 0.55 Range (mi.) 105.3 86.9 97.7 81.7 Avg. Ambient Temp. 79° F 83° F 84° F 89° F State of Charge Meter (Urban Range Test) 0 20 40 60 80 100 120 0 1 2 3 4 5 6 7 8 9 State of Charge Miles Driven 0 20 40 60 80 100 120 140 Miles Remaining Miles Driven Miles Remaining Start End * * Initial " Miles Remaining" depend on driving economy before recharge Freeway Range (On Freeway Pomona Loop - see other side for map) Range (mi.) Without Aux. Loads With Aux. Loads 90.6 89.1 Maximum 860 Minimum

95

ford.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

FORD RANGER EV FORD RANGER EV LEAD ACID BATTERIES MARCH 1998 Urban Range (On Urban Pomona Loop - see other side for map) Range (mi.) Without Aux. Loads With Aux . Lo a ds Pay load ( lb.) Maximum 640 Minimum 140 UR1 UR2 UR3 UR4 58.3 58.7 60.1 72.1 Test UR1 UR2 UR3 UR4 Payload (lb.) 140 140 640 640 AC kWh Recharge 29.11 28.16 28.20 28.23 AC kWh/mi. 0.40 0.47 0.48 0.48 Range (mi.) 72.1 60.1 58.7 58.3 Avg. Ambient Temp. 79° F 61° F 69° F 64° F State of Charge Meter (Urban Range Test) 0 10 20 30 40 50 60 70 80 0 0.5 1 1.5 2 2.5 3 3.5 4 State of Charge (4=F, 0=E) Miles Driven Miles Driven Miles Remaining * * Initial "Miles Remaining" depend on driving economy before recharge Freeway Range (On Freeway Pomona Loop - see other side for map) Range (mi.) Without Aux. Loads With Au x . L o a ds 51.6 57.2 60 66.4

96

On-line parameter estimation of PMSM in open loop and closed loop  

Science Conference Proceedings (OSTI)

The paper discusses the multi-models approach for on-line parameter estimation of permanent magnet synchronous motor (PMSM). The study is focused on a PMSM with non sinusoidal electromotive force (emf) in open loop and closed loop conditions. The electrical ...

Makara Khov; Jeremi Regnier; Jean Faucher

2009-02-01T23:59:59.000Z

97

Parameterizing loop fusion for automated empirical tuning  

SciTech Connect

Traditional compilers are limited in their ability to optimize applications for different architectures because statically modeling the effect of specific optimizations on different hardware implementations is difficult. Recent research has been addressing this issue through the use of empirical tuning, which uses trial executions to determine the optimization parameters that are most effective on a particular hardware platform. In this paper, we investigate empirical tuning of loop fusion, an important transformation for optimizing a significant class of real-world applications. In spite of its usefulness, fusion has attracted little attention from previous empirical tuning research, partially because it is much harder to configure than transformations like loop blocking and unrolling. This paper presents novel compiler techniques that extend conventional fusion algorithms to parameterize their output when optimizing a computation, thus allowing the compiler to formulate the entire configuration space for loop fusion using a sequence of integer parameters. The compiler can then employ an external empirical search engine to find the optimal operating point within the space of legal fusion configurations and generate the final optimized code using a simple code transformation system. We have implemented our approach within our compiler infrastructure and conducted preliminary experiments using a simple empirical search strategy. Our results convey new insights on the interaction of loop fusion with limited hardware resources, such as available registers, while confirming conventional wisdom about the effectiveness of loop fusion in improving application performance.

Zhao, Y; Yi, Q; Kennedy, K; Quinlan, D; Vuduc, R

2005-12-15T23:59:59.000Z

98

Essays on rural-urban migration in hinterland China  

E-Print Network (OSTI)

Marriage Rates in Rural China . . . . . . . . . . .Urban Migration in Hinterland China . . . . . . . . . .and Rural-Urban Migration in Hinterland China . . . . . 1.

Meng, Lei

2009-01-01T23:59:59.000Z

99

Urban regeneration : enabled by mobility centric architecture  

E-Print Network (OSTI)

The primary goal of this thesis is to develop a new urban architectural prototype to reinvigorate the British New Town. New models of adaptable, sustainable, architecture and urban design are explored with the ultimate ...

Higgins, Wayne Charles

2010-01-01T23:59:59.000Z

100

A transformation of Shanghai's urban fabric  

E-Print Network (OSTI)

Due to rapid development of the city, Shanghai has become characterized by drastic juxtapositions of building typologies and urban forms. Entire sections of the urban center are being replaced with large scale developments ...

Caine, Christine (Christine M.)

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Case Studies in Urban Energy Planning  

NLE Websites -- All DOE Office Websites (Extended Search)

present a few case studies on urban energy planning for Chinese cities, with the focus on district heating systems. Questions and challenges in urban energy research will be raised...

102

National Urban Database and Access Portal Tool  

Science Conference Proceedings (OSTI)

Based on the need for advanced treatments of high-resolution urban morphological features (e.g., buildings and trees) in meteorological, dispersion, air quality, and human-exposure modeling systems for future urban applications, a new project was ...

Jason Ching; Michael Brown; Timothy McPherson; Steven Burian; Fei Chen; Ron Cionco; Adel Hanna; Torrin Hultgren; David Sailor; Haider Taha; David Williams

2009-08-01T23:59:59.000Z

103

Director Position Center for Urban Transportation  

E-Print Network (OSTI)

Director Position Center for Urban Transportation The Center for Urban Transportation Research for state policymakers, transportation agencies, transportation professionals and the public. CUTR conducts of Transportation's Federal Transit Administration and Federal Highway Administration, the Florida Department

Arslan, Hüseyin

104

in development and the urban environment  

E-Print Network (OSTI)

woodland The Queen's Inclosure, Havant, Hants Peri-urban Waterhayes, Newcastle-under-Lyme, Staffs Rural costs. 15 PERI-URBAN Waterhayes, Newcastle-under-Lyme RURALURBAN Environmental advantages Improved

105

BIDDING ON URBANITY WITH BUSINESS IMPROVEMENT DISTRICTS: .  

E-Print Network (OSTI)

??BIDDING ON URBANITY WITH BUSINESS IMPROVEMENT DISTRICTS: RE-MAKING URBAN PLACES IN WASHINGTON, DC Susanna Francesca Schaller, Ph.D. Cornell University 2007 ?The livable city,? one that (more)

Schaller, Susanna

2007-01-01T23:59:59.000Z

106

The urban heat island Mitigation Impact Screening Tool (MIST)  

Science Conference Proceedings (OSTI)

A web-based software tool has been developed to assist urban planners and air quality management officials in assessing the potential of urban heat island mitigation strategies to affect the urban climate, air quality, and energy consumption within their ... Keywords: Air quality, Albedo, Atmospheric modeling, Urban climate, Urban forestry, Urban heat islands

David J. Sailor; Nikolaas Dietsch

2007-10-01T23:59:59.000Z

107

The development of Urban Crime Simulator  

Science Conference Proceedings (OSTI)

Based on routine activities theory, deviant places theory, and neighborhood life cycle concepts, this paper describes the development of an Urban Crime Simulator (UCS) that was developed to allow estimation for changes in property crime rates in urban ... Keywords: crime, deviant places theory, neighborhood life cycle, routine activities theory, simulation, urban growth

Jay Lee; Chaoqing Yu

2010-06-01T23:59:59.000Z

108

Selective purge for hydrogenation reactor recycle loop  

SciTech Connect

Processes and apparatus for providing improved contaminant removal and hydrogen recovery in hydrogenation reactors, particularly in refineries and petrochemical plants. The improved contaminant removal is achieved by selective purging, by passing gases in the hydrogenation reactor recycle loop or purge stream across membranes selective in favor of the contaminant over hydrogen.

Baker, Richard W. (Palo Alto, CA); Lokhandwala, Kaaeid A. (Union City, CA)

2001-01-01T23:59:59.000Z

109

Loop expansion in Yang-Mills thermodynamics  

E-Print Network (OSTI)

We argue that a selfconsistent spatial coarse-graining, which involves interacting (anti)calorons of unit topological charge modulus, implies that real-time loop expansions of thermodynamical quantities in the deconfining phase of SU(2) and SU(3) Yang-Mills thermodynamics are, modulo 1PI resummations, determined by a finite number of connected bubble diagrams.

Ralf Hofmann

2006-09-05T23:59:59.000Z

110

Free Steiner Loops Smile Markovski, Ana Sokolova  

E-Print Network (OSTI)

Free Steiner Loops Smile Markovski, Ana Sokolova Faculty of Sciences and Mathematics, Institute and finite sloops. Two constructions of free objects in the variety of sloops are pre­ sented in this paper. They both allow recursive construction of a free sloop with a free base X, provided that X is recursively

Sokolova, Ana

111

Loop realizations of quantum affine algebras  

Science Conference Proceedings (OSTI)

We give a simplified description of quantum affine algebras in their loop presentation. This description is related to Drinfeld's new realization via halves of vertex operators. We also define an idempotent version of the quantum affine algebra which is suitable for categorification.

Cautis, Sabin [Department of Mathematics, University of Southern California, Los Angeles, California, 90089 (United States); Licata, Anthony [Department of Mathematics, Australian National University, Canberra (Australia)

2012-12-15T23:59:59.000Z

112

Research issues on closed-loop PLM  

Science Conference Proceedings (OSTI)

This study introduces the research issues on closed-loop product lifecycle management (PLM) where product information flow is closed due to emerging technologies. PLM is a new strategic approach to manage the product lifecycle information efficiently ... Keywords: PLM, Product identification technologies, Product lifecycle, Research issues

Hong-Bae Jun; Dimitris Kiritsis; Paul Xirouchakis

2007-12-01T23:59:59.000Z

113

Urban Wood Waste Resource Assessment  

DOE Green Energy (OSTI)

This study collected and analyzed data on urban wood waste resources in 30 randomly selected metropolitan areas in the United States. Three major categories wood wastes disposed with, or recovered from, the municipal solid waste stream; industrial wood wastes such as wood scraps and sawdust from pallet recycling, woodworking shops, and lumberyards; and wood in construction/demolition and land clearing debris.

Wiltsee, G.

1998-11-20T23:59:59.000Z

114

Adaptive Urban Dispersion Integrated Model  

DOE Green Energy (OSTI)

Numerical simulations represent a unique predictive tool for understanding the three-dimensional flow fields and associated concentration distributions from contaminant releases in complex urban settings (Britter and Hanna 2003). Utilization of the most accurate urban models, based on fully three-dimensional computational fluid dynamics (CFD) that solve the Navier-Stokes equations with incorporated turbulence models, presents many challenges. We address two in this work; first, a fast but accurate way to incorporate the complex urban terrain, buildings, and other structures to enforce proper boundary conditions in the flow solution; second, ways to achieve a level of computational efficiency that allows the models to be run in an automated fashion such that they may be used for emergency response and event reconstruction applications. We have developed a new integrated urban dispersion modeling capability based on FEM3MP (Gresho and Chan 1998, Chan and Stevens 2000), a CFD model from Lawrence Livermore National Lab. The integrated capability incorporates fast embedded boundary mesh generation for geometrically complex problems and full three-dimensional Cartesian adaptive mesh refinement (AMR). Parallel AMR and embedded boundary gridding support are provided through the SAMRAI library (Wissink et al. 2001, Hornung and Kohn 2002). Embedded boundary mesh generation has been demonstrated to be an automatic, fast, and efficient approach for problem setup. It has been used for a variety of geometrically complex applications, including urban applications (Pullen et al. 2005). The key technology we introduce in this work is the application of AMR, which allows the application of high-resolution modeling to certain important features, such as individual buildings and high-resolution terrain (including important vegetative and land-use features). It also allows the urban scale model to be readily interfaced with coarser resolution meso or regional scale models. This talk will discuss details of the approach and present results for some example calculations performed in Manhattan in support of the DHS Urban Dispersion Program (UDP) using some of the tools developed as part of this new capability.

Wissink, A; Chand, K; Kosovic, B; Chan, S; Berger, M; Chow, F K

2005-11-03T23:59:59.000Z

115

Loop simulation capability for sodium-cooled systems  

E-Print Network (OSTI)

A one-dimensional loop simulation capability has been implemented in the thermal-hydraulic analysis code, THERMIT-4E. This code had been used to simulate and investigate flow in test sections of experimental sodium loops ...

Adekugbe, Oluwole A.

1984-01-01T23:59:59.000Z

116

Better 'Photon Loops' May Be Key to Computer and Physics ...  

Science Conference Proceedings (OSTI)

Better 'Photon Loops' May Be Key to Computer and Physics Advances. From NIST Tech Beat: August 22, 2011. ...

2012-08-23T23:59:59.000Z

117

District Level Analysis of Urbanization from Rural-to-Urban Migration in the Rajasthan State  

E-Print Network (OSTI)

Migration has various dimensions; urbanization due to migration is one of them. In Rajasthan State, district level analysis of urbanization due to migrants shows trend invariably for all districts of the state, though the contribution in urbanization by migrants varies from district to district. In some districts the share of migrants moving to urban areas is very impressive, in others it is not that much high. The migrants' contribution is on the raising over the decades. In this paper, the district level migration in the Rajasthan State is examined in relation to total urbanization and urbanization due to migration.

Jayant Singh; Hansraj Yadav; Florentin Smarandache

2009-12-02T23:59:59.000Z

118

A Load Balancing Tool for Distributed Parallel Loops  

Science Conference Proceedings (OSTI)

Large scale applications typically contain parallel loops with many iterates. The iterates of a parallel loop may have variable execution times which translate into performance degradation of an application due to load imbalance. This paper describes ... Keywords: adaptive loop scheduling, dynamic load balancing

Ricolindo L. Cario; Ioana Banicescu

2005-10-01T23:59:59.000Z

119

Highly Efficient Modeling of Dynamic Coronal Loops  

E-Print Network (OSTI)

Observational and theoretical evidence suggests that coronal heating is impulsive and occurs on very small cross-field spatial scales. A single coronal loop could contain a hundred or more individual strands that are heated quasi-independently by nanoflares. It is therefore an enormous undertaking to model an entire active region or the global corona. Three-dimensional MHD codes have inadequate spatial resolution, and 1D hydro codes are too slow to simulate the many thousands of elemental strands that must be treated in a reasonable representation. Fortunately, thermal conduction and flows tend to smooth out plasma gradients along the magnetic field, so "0D models" are an acceptable alternative. We have developed a highly efficient model called Enthalpy-Based Thermal Evolution of Loops (EBTEL) that accurately describes the evolution of the average temperature, pressure, and density along a coronal strand. It improves significantly upon earlier models of this type--in accuracy, flexibility, and capability. It ...

Klimchuk, J A; Cargill, P J

2007-01-01T23:59:59.000Z

120

EXAMINATION OF HIGH PRESSURE RECOMBINER LOOP SPECIMENS  

DOE Green Energy (OSTI)

Speciments of iodide zirconium, Zircaloy-2, Zr-15Nb, iodide titanium, TMCA-45 titanium, A-110AT titanium, and 430 stainless steel were corroded in a highpressure recombiner loop. Analyses were performed to determine the amount of hydrogen pickup. The titanium materials and iodide zirconium showed very high hydrogen pickups, while the zirconium alloys and the 430 stainless steel absorbed smaller amounts of hydrogen Metallographic examination of the specimens showed that recrystallization occurred in all but the Ar-15Nb specimens. There seems to be little difference in the extent of recrystallization and grain growth whether the in the recombiner section at 430 to 500 deg C. Recrystalliplained or correlated in any way with the amount of f hydrogen sion that occured. Since hydrogen is known to seriously embrittle zirconium and titanium, it is recommended that crystal-bar zirconium and titanium alloys not be used as materials of construction in environ ments sinmilar to that of the High Pressure Recombiner Loop. (auth)

Picklesimer, M.L.; Rittenhouse, P.L.

1958-08-14T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Projective Structures in Loop Quantum Cosmology  

E-Print Network (OSTI)

Projective structures have successfully been used for the construction of measures in the framework of loop quantum gravity. In the present paper we establish such a structure for the space $R \\sqcup R_Bohr$ recently constructed in the context of homogeneous isotropic loop quantum cosmology. This space has the advantage to be canonically embedded into the quantum configuration space of the full theory, but, in contrast to the traditional space $R_Bohr$, there exists no Haar measure on $R \\sqcup R_Bohr$. The introduced projective structure, however, allows to construct a family of canonical measures on $R \\sqcup R_Bohr$ whose corresponding Hilbert spaces of square integrable functions we finally investigate.

Maximilian Hanusch

2013-09-03T23:59:59.000Z

122

Flipped spinfoam vertex and loop gravity  

E-Print Network (OSTI)

We introduce a vertex amplitude for 4d loop quantum gravity. We derive it from a conventional quantization of a Regge discretization of euclidean general relativity. This yields a spinfoam sum that corrects some difficulties of the Barrett-Crane theory. The second class simplicity constraints are imposed weakly, and not strongly as in Barrett-Crane theory. Thanks to a flip in the quantum algebra, the boundary states turn out to match those of SO(3) loop quantum gravity -- the two can be identified as eigenstates of the same physical quantities -- providing a solution to the problem of connecting the covariant SO(4) spinfoam formalism with the canonical SO(3) spin-network one. The vertex amplitude is SO(3) and SO(4)-covariant. It rectifies the triviality of the intertwiner dependence of the Barrett-Crane vertex, which is responsible for its failure to yield the correct propagator tensorial structure. The construction provides also an independent derivation of the kinematics of loop quantum gravity and of the result that geometry is quantized.

Jonathan Engle; Roberto Pereira; Carlo Rovelli

2007-08-09T23:59:59.000Z

123

Lorentz covariance of loop quantum gravity  

SciTech Connect

The kinematics of loop gravity can be given a manifestly Lorentz-covariant formulation: the conventional SU(2)-spin-network Hilbert space can be mapped to a space K of SL(2,C) functions, where Lorentz covariance is manifest. K can be described in terms of a certain subset of the projected spin networks studied by Livine, Alexandrov and Dupuis. It is formed by SL(2,C) functions completely determined by their restriction on SU(2). These are square-integrable in the SU(2) scalar product, but not in the SL(2,C) one. Thus, SU(2)-spin-network states can be represented by Lorentz-covariant SL(2,C) functions, as two-component photons can be described in the Lorentz-covariant Gupta-Bleuler formalism. As shown by Wolfgang Wieland in a related paper, this manifestly Lorentz-covariant formulation can also be directly obtained from canonical quantization. We show that the spinfoam dynamics of loop quantum gravity is locally SL(2,C)-invariant in the bulk, and yields states that are precisely in K on the boundary. This clarifies how the SL(2,C) spinfoam formalism yields an SU(2) theory on the boundary. These structures define a tidy Lorentz-covariant formalism for loop gravity.

Rovelli, Carlo; Speziale, Simone [Centre de Physique Theorique de Luminy, Case 907, F-13288 Marseille (France)

2011-05-15T23:59:59.000Z

124

Ground Loops for Heat Pumps and Refrigeration  

E-Print Network (OSTI)

Ground loops are used for water source heat pumps. Refrigeration can be put on a ground loop. Water-cooled condensing units are more efficient than air-cooled, and they can be put indoors. Indoor location makes piping for desuperheater hot water easy. Since refrigeration equipment runs more than heat pumps, energy savings can be large for ground-coupled refrigeration. The paper presents a design procedure for ground loops for heat pumps, hot water, ice machines, and water-cooled refrigeration. It gives an overview of the commercial ground-coupled systems in Louisiana that have both refrigeration and heat pumps. Systems vary from small offices to a three-story office building with 187 tons. A chain of hamburger outlets uses total ground-coupling in all of its stores. A grocery store has ground-coupling for heat pumps and refrigeration. Desuperheaters provide 80 percent of the hot water for a coin laundry in the same building. A comparison of energy costs in a bank with a ground-coupled heat pump system to a similar bank with air-conditioning and gas for heat revealed a 31 percent reduction in utility costs for the ground-coupled building. Two buildings of the Mississippi Power and Light Co. have ground-coupled heat pumps in one, and high efficiency air source heat pumps in the other. Energy savings in nine months was 60,000 kWh (25 percent), and electric peak demand was reduced 42 kW (35 percent).

Braud, H. J.

1986-01-01T23:59:59.000Z

125

MAGNETIC LOOPS IN THE QUIET SUN  

Science Conference Proceedings (OSTI)

We investigate the fine structure of magnetic fields in the atmosphere of the quiet Sun. We use photospheric magnetic field measurements from SUNRISE/IMaX with unprecedented spatial resolution to extrapolate the photospheric magnetic field into higher layers of the solar atmosphere with the help of potential and force-free extrapolation techniques. We find that most magnetic loops that reach into the chromosphere or higher have one footpoint in relatively strong magnetic field regions in the photosphere. Ninety-one percent of the magnetic energy in the mid-chromosphere (at a height of 1 Mm) is in field lines, whose stronger footpoint has a strength of more than 300 G, i.e., above the equipartition field strength with convection. The loops reaching into the chromosphere and corona are also found to be asymmetric in the sense that the weaker footpoint has a strength B < 300 G and is located in the internetwork (IN). Such loops are expected to be strongly dynamic and have short lifetimes, as dictated by the properties of the IN fields.

Wiegelmann, T.; Solanki, S. K.; Barthol, P.; Gandorfer, A. [Max-Planck-Institut fuer Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau (Germany); Borrero, J. M.; Schmidt, W. [Kiepenheuer-Institut fuer Sonnenphysik, Schoeneckstr. 6, 79104 Freiburg (Germany); Pillet, V. MartInez; Bonet, J. A. [Instituto de Astrofisica de Canarias, C/Via Lactea s/n, 38200 La Laguna, Tenerife (Spain); Del Toro Iniesta, J. C. [Instituto de Astrofisica de Andalucia (CSIC), Apartado de Correos 3004, 18080 Granada (Spain); Domingo, V. [Grupo de Astronomia y Ciencias del Espacio, Universidad de Valencia, 46980 Paterna, Valencia (Spain); Knoelker, M. [High Altitude Observatory, National Center for Atmospheric Research Boulder, CO 80307 (United States); Title, A. M., E-mail: wiegelmann@mps.mpg.d [Lockheed Martin Solar and Astrophysics Laboratory, Bldg. 252, 3251 Hanover Street, Palo Alto, CA 94304 (United States)

2010-11-10T23:59:59.000Z

126

Urban Network Practices: Ameren Missouri  

Science Conference Proceedings (OSTI)

This report describes the findings of an underground distribution practices immersion conducted by the Electric Power Research Institute (EPRI) with Ameren Missouri. This immersion was conducted as part of a multiyear effort by EPRI to identify noteworthy practices in managing urban network systems. More specifically, this report profiles the practices (people, processes, and technology) in place at Ameren Missouri, a St. Louis, Missouri, based utility serving customers through secondary network ...

2012-08-20T23:59:59.000Z

127

On active region loops: Hinode/EIS observations  

E-Print Network (OSTI)

Coronal loops are fundamental building blocks of the solar active regions and the corona. Therefore, a clear understanding of the physics of coronal loops will help us understand the physics of active region heating in particular and coronal heating in general. This requires a precise measurement of physical quantities such as electron densities and filling factors, temperatures, and flows in coronal loops. In this paper we have carried out an investigation of a spatially well resolved coronal loop using the EIS onboard Hinode to measure the above mentioned physical quantities. Based on this study we find that a nano-flare model could explain most of the observed characteristics of this loop.

Tripathi, D; Dwivedi, B N; Del Zanna, G; Young, P R

2009-01-01T23:59:59.000Z

128

Bio-Polymer Hairpin Loops Sustained by Polarons  

E-Print Network (OSTI)

We show that polarons can sustain loop-like configurations in flexible bio-polymers and that the size of the loops depend on both the flexural rigidity of the polymer and the electron-phonon coupling constant. In particular we show that for single stranded DNA (ssDNA) such loops can have as little as 10 base pairs. For polyacetylene the shortest loop must have at least 12 nodes. We also show that these configurations are very stable under thermal fluctuations and can facilitate the formation of hairpin-loops of ssDNA.

B. Chakrabarti; B. Piette; W. J. Zakrzewski

2012-04-04T23:59:59.000Z

129

Bio-Polymer Hairpin Loops Sustained by Polarons  

E-Print Network (OSTI)

We show that polarons can sustain loop-like configurations in flexible bio-polymers and that the size of the loops depend on both the flexural rigidity of the polymer and the electron-phonon coupling constant. In particular we show that for single stranded DNA (ssDNA) such loops can have as little as 10 base pairs. For polyacetylene the shortest loop must have at least 12 nodes. We also show that these configurations are very stable under thermal fluctuations and can facilitate the formation of hairpin-loops of ssDNA.

Chakrabarti, B; Zakrzewski, W J

2012-01-01T23:59:59.000Z

130

Chemical Looping Air Separation Unit and Methods of Use  

NLE Websites -- All DOE Office Websites (Extended Search)

Looping Air Separation Unit and Methods of Use Looping Air Separation Unit and Methods of Use Contact NETL Technology Transfer Group techtransfer@netl.doe.gov October 2012 Opportunity Research is currently active on the patent-pending technology "Chemical Looping Air Separation Unit and Methods of Use" that combines the best attributes of chemical looping and oxy-fuel combustion technologies. Following patent approval, the technology will be available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory. Significance * Combines chemical looping and oxy-fuel technologies * Separates oxygen from air at high efficiencies * Removes CO

131

Overview of URBAN 2000: A Multiscale Field Study of Dispersion through an Urban Environment  

Science Conference Proceedings (OSTI)

A major urban tracer and meteorological field campaign (URBAN 2000) was conducted in Salt Lake City, Utah, during October 2000. Sponsored by the U.S. Department of Energy's (DOE's) Chemical and Biological National Security Program, the month-long ...

K. J. Allwine; J. H. Shinn; G. E. Streit; K. L. Clawson; M. Brown

2002-04-01T23:59:59.000Z

132

Impact of Upstream Urbanization on the Urban Heat Island Effects along the WashingtonBaltimore Corridor  

Science Conference Proceedings (OSTI)

Although there has been considerable research on urban heat island (UHI) effects, most of the previous studies have attributed UHI effects to localized, surface processes. In this study, the impact of upstream urbanization on enhanced UHI effects ...

Da-Lin Zhang; Yi-Xuan Shou; Russell R. Dickerson; Fei Chen

2011-10-01T23:59:59.000Z

133

Evaluation of an Urban Canopy Parameterization in a Mesoscale Model Using VTMX and URBAN 2000 Data  

Science Conference Proceedings (OSTI)

A modified urban canopy parameterization (UCP) is developed and evaluated in a three-dimensional mesoscale model to assess the urban impact on surface and lower-atmospheric properties. This parameterization accounts for the effects of building ...

Hung-Neng S. Chin; Martin J. Leach; Gayle A. Sugiyama; John M. Leone Jr.; Hoyt Walker; J. S. Nasstrom; Michael J. Brown

2005-07-01T23:59:59.000Z

134

An urban weather generator coupling a building simulation program with an urban canopy model  

E-Print Network (OSTI)

The increase in air temperature observed in urban environments compared to the undeveloped rural surroundings, known as the Urban Heat Island (UHI) effect, is being intensely studied, due to its adverse environmental and ...

Bueno Unzeta, Bruno

2010-01-01T23:59:59.000Z

135

Urban settlement issues : observations from 181 surveys of urban dwelling environments in developing countries  

E-Print Network (OSTI)

Observations and summaries were made on 181 surveys of urban dwelling environments in developing countries, carried out by members of the Urban Settlement Design Program (U.S.D.P.), at MIT. The focus of this study is in ...

Wang, Chih-chien, M.S. Massachusetts Institute of Technology

1982-01-01T23:59:59.000Z

136

Consequences of Urban Stability Conditions for Computational Fluid Dynamics Simulations of Urban Dispersion  

Science Conference Proceedings (OSTI)

The validity of omitting stability considerations when simulating transport and dispersion in the urban environment is explored using observations from the Joint Urban 2003 field experiment and computational fluid dynamics simulations of that ...

Julie K. Lundquist; Stevens T. Chan

2007-07-01T23:59:59.000Z

137

Disparity between rural and urban education.  

E-Print Network (OSTI)

??By asking two groups of students respectively from a rural school and an urban school in Yunnan Province in Southwest region of China, this research (more)

Zhang, Li

2009-01-01T23:59:59.000Z

138

Polycyclic aromatic hydrocarbon concentrations in urban soils ...  

Science Conference Proceedings (OSTI)

yards, coking plants, power plants, chemical plants, urban parks, university ...... Barrie LA, Gregor DJ, Hargrave B, Lake R, Muir D, Shearer R, Tracy. B, Bidleman ...

139

High-resolution urban thermal sharpener (HUTS)  

E-Print Network (OSTI)

ofzoninginurbanecosystemswithremotesensing,RemoteSensingofEnvironment Yaghoobian,N. ,J. ofthermalimagery. RemoteSensingofEnvironment107,

Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C; Rickman, Douglas L

2011-01-01T23:59:59.000Z

140

nissan hypermini urban electric vehicle testing  

NLE Websites -- All DOE Office Websites (Extended Search)

Department of Energy FreedomCAR & Vehicle Technologies Program Nissan Hypermini Urban Electric Vehicle Testing TECHNICAL REPORT Roberta Brayer James Francfort January 2006...

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While these samples are representative of the content of NLEBeta,
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141

Advanced Vehicle Testing Activity - Urban Electric Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

are designed to carry two or four passengers. Click here for more information About Urban Electric Vehicles (PDF 128KB) Vehicle Testing Reports Ford THINK City Ford Thnk...

142

Strategies for systemic urban constructed wetlands  

E-Print Network (OSTI)

As a result of ubiquitous impermeable surfaces, conventional water management and stormwater infrastructure, and the resultant degradation of natural hydrologic networks, most American urban areas have suffered severely ...

Balderas-Guzmn, Celina

2013-01-01T23:59:59.000Z

143

The Block: Enabler of Urban Architecture [Forum  

E-Print Network (OSTI)

of Urban Architecture Vermont Village Plaza, a multifamilyin the midblock. Below: Vermont Avenue streetscape. Photos:Berkeley. Project: Vermont Village Plaza Architect: Solomon

Solomon, Daniel

1999-01-01T23:59:59.000Z

144

Chapter 1 Urban development patterns in China: The new, the renewed, and the ignored urban space  

E-Print Network (OSTI)

Chapter 1 Urban development patterns in China: The new, the renewed, and the ignored urban space Tingwei Zhang In Urbanization in China: Critical Issues in an Era of Rapid growth, 2007, Edited by Song, Y. Lincoln Institute of Land Use Policy, 3-27 The world witnesses impressive changes in China since

Illinois at Chicago, University of

145

Urban Dispersion Modeling: Comparison with Single-Building Measurements  

Science Conference Proceedings (OSTI)

Two models have been developed to predict airflow and dispersion in urban environments. The first model, the Realistic Urban Spread and Transport of Intrusive Contaminants (RUSTIC) model, is a fast-running urban airflow code that rapidly ...

Steve R. Diehl; Donald A. Burrows; Eric A. Hendricks; Robert Keith

2007-12-01T23:59:59.000Z

146

Gas Test Loop Booster Fuel Hydraulic Testing  

SciTech Connect

The Gas Test Loop (GTL) project is for the design of an adaptation to the Advanced Test Reactor (ATR) to create a fast-flux test space where fuels and materials for advanced reactor concepts can undergo irradiation testing. Incident to that design, it was found necessary to make use of special booster fuel to enhance the neutron flux in the reactor lobe in which the Gas Test Loop will be installed. Because the booster fuel is of a different composition and configuration from standard ATR fuel, it is necessary to qualify the booster fuel for use in the ATR. Part of that qualification is the determination that required thermal hydraulic criteria will be met under routine operation and under selected accident scenarios. The Hydraulic Testing task in the GTL project facilitates that determination by measuring flow coefficients (pressure drops) over various regions of the booster fuel over a range of primary coolant flow rates. A high-fidelity model of the NW lobe of the ATR with associated flow baffle, in-pile-tube, and below-core flow channels was designed, constructed and located in the Idaho State University Thermal Fluids Laboratory. A circulation loop was designed and constructed by the university to provide reactor-relevant water flow rates to the test system. Models of the four booster fuel elements required for GTL operation were fabricated from aluminum (no uranium or means of heating) and placed in the flow channel. One of these was instrumented with Pitot tubes to measure flow velocities in the channels between the three booster fuel plates and between the innermost and outermost plates and the side walls of the flow annulus. Flow coefficients in the range of 4 to 6.5 were determined from the measurements made for the upper and middle parts of the booster fuel elements. The flow coefficient for the lower end of the booster fuel and the sub-core flow channel was lower at 2.3.

Gas Test Loop Hydraulic Testing Staff

2006-09-01T23:59:59.000Z

147

High-Resolution Design of a Protein Loop  

DOE Green Energy (OSTI)

Despite having irregular structure, protein loops often adopt specific conformations that are critical to protein function. Most studies in de novo protein design have focused on creating proteins with regular elements of secondary structure connected by very short loops or turns. To design longer protein loops that adopt specific conformations, we have developed a protocol within the Rosetta molecular modeling program that iterates between optimizing the sequence and conformation of a loop in search of low-energy sequence-structure pairs. We have tested the procedure by designing 10-residue loops for the connection between the second and third strand in the {beta}-sandwich protein tenascin. Three low-energy designs from 7,200 flexible backbone trajectories were selected for experimental characterization. All three designs, called LoopA, LoopB, and LoopC, adopt stable folded structures. High-resolution crystal structures of LoopA and LoopB have been solved. LoopB adopts a structure very similar to the design model (0.46 Angstroms rmsd), and all but one of the side chains are modeled in the correct rotamers. LoopA crystallized at low pH in a structure that differs dramatically from our design model. It forms a strand-swapped dimer mediated by hydrogen bonds to protonated glutamic acids. Gel filtration indicates that the protein is not a dimer at neutral pH. These results suggest that the high-resolution design of protein loops is possible; however, they also highlight how small changes in protein energetics can dramatically perturb the low free energy structure of a protein.

Hu,X.; Wang, H.; Ke, H.; Kuhlman, B.

2007-01-01T23:59:59.000Z

148

Interaction of Nocturnal Low-Level Jets with Urban Geometries as Seen in Joint Urban 2003 Data  

Science Conference Proceedings (OSTI)

Because accurate modeling of atmospheric flows in urban environments requires sophisticated representation of complex urban geometries, much work has been devoted to treatment of the urban surface. However, the importance of the larger-scale flow ...

Julie K. Lundquist; Jeffrey D. Mirocha

2008-01-01T23:59:59.000Z

149

Essays on rural-urban migration in hinterland China  

E-Print Network (OSTI)

Table 1.5: Rural to Urban Migration2. Land in the Rural-Urban MigrationMarriage Rates in Rural China . . . . . . . . . . .

Meng, Lei

2009-01-01T23:59:59.000Z

150

Gauging Improvements in Urban Building Energy Policy in India  

NLE Websites -- All DOE Office Websites (Extended Search)

Gauging Improvements in Urban Building Energy Policy in India Title Gauging Improvements in Urban Building Energy Policy in India Publication Type Conference Proceedings Year of...

151

Joint Urban 2003: Indoor Measurements Final Data Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Joint Urban 2003: Indoor Measurements Final Data Report Title Joint Urban 2003: Indoor Measurements Final Data Report Publication Type Report Year of Publication 2004 Authors...

152

Indonesia-Promoting Low Emission Urban Development Strategies...  

Open Energy Info (EERE)

in Emerging Economy Countries (URBAN-LEDS) Jump to: navigation, search Name Indonesia-Promoting Low Emission Urban Development Strategies in Emerging Economy Countries...

153

Valuing the Environmental Benefits of Urban Water Conservation  

E-Print Network (OSTI)

Bene?ts of Urban Water Conservation LBNL-61011 1 Katiethe California Urban Water Conservation Council, LNBL Awardwww.irwd.com/Conservation/water conservation research.php#=

Coughlin, Katie M.; Bolduc, Chris A.; Chan, Peter T.; Dunham-Whitehead, C.; Van Buskirk, R.D.

2008-01-01T23:59:59.000Z

154

Sustainable Urban Development Priorities - Development of a Rapid...  

Open Energy Info (EERE)

Development Priorities - Development of a Rapid Assessment Tool for Urban Mobility in Cities with Data Scarcity Jump to: navigation, search Tool Summary Name: Sustainable Urban...

155

Guidelines and Toolkits for Urban Transport Development in Medium...  

Open Energy Info (EERE)

Guidelines and Toolkits for Urban Transport Development in Medium Sized Cities in India Jump to: navigation, search Tool Summary Name: Guidelines and Toolkits for Urban Transport...

156

GIS spatial analysis for the design of urban open space.  

E-Print Network (OSTI)

??Urban design in the landscape architectural tradition has a unique set of users and uses due to the nature of urban sites in densely developed (more)

Howard, Michael Isaac

2008-01-01T23:59:59.000Z

157

Energy Department Announces the SUN Project, Empowering Urban...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Department Announces the SUN Project, Empowering Urban Native Youth in STEM Education Energy Department Announces the SUN Project, Empowering Urban Native Youth in STEM...

158

DOE News Release - DOE Conducts Urban Electric Vehicle Demonstration...  

NLE Websites -- All DOE Office Websites (Extended Search)

program include: * Enhancing public awareness of Urban EVs * Defining the unique Urban EV market and niche applications * Enhancing EV infrastructure * Investigating the economic...

159

Community Renewable Energy Success Stories: Wind Energy in Urban...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stories: Wind Energy in Urban Environments Webinar (text version) Community Renewable Energy Success Stories: Wind Energy in Urban Environments Webinar (text version) Below is the...

160

Simple laws of urban growth  

E-Print Network (OSTI)

By analysing the evolution of the street network of Greater London from the late 1700s to the present, we are able to shed light on the inner mechanisms that lie behind the growth of a city. First we define an object called a city as a spatial discontinuous phenomena, from clustering the density of street intersections. Second, we find that the city growth mechanisms can be described by two logistic laws, hence can be determined by a simple model of urban network growth in the presence of competition for limited space.

Masucci, Paolo; Batty, Michael

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

GNSS dataless signal tracking with a delay semi-open loop and a phase open loop  

Science Conference Proceedings (OSTI)

In this article we propose to process the code and phase delay of a dataless GNSS signal in open and semi-open loops. The aims of this processing are to get an accurate estimate of the phase and code delays by integration of the GNSS signal. We show ... Keywords: Bayesian estimation, Circular estimation, GNSS signal processing

G. Stienne; S. Reboul; M. Azmani; J. B. Choquel; M. Benjelloun

2013-05-01T23:59:59.000Z

162

Loop Current Cycle: Coupled Response of the Loop Current with Deep Flows  

Science Conference Proceedings (OSTI)

Although the upper-layer dynamics of the Loop Current and eddies in the Gulf of Mexico are well studied, the understanding of how they are coupled to the deep flows is limited. In this work, results from a numerical model are analyzed to classify ...

Y.-L. Chang; L.-Y. Oey

2011-03-01T23:59:59.000Z

163

Highly Efficient Modeling of Dynamic Coronal Loops  

E-Print Network (OSTI)

Observational and theoretical evidence suggests that coronal heating is impulsive and occurs on very small cross-field spatial scales. A single coronal loop could contain a hundred or more individual strands that are heated quasi-independently by nanoflares. It is therefore an enormous undertaking to model an entire active region or the global corona. Three-dimensional MHD codes have inadequate spatial resolution, and 1D hydro codes are too slow to simulate the many thousands of elemental strands that must be treated in a reasonable representation. Fortunately, thermal conduction and flows tend to smooth out plasma gradients along the magnetic field, so "0D models" are an acceptable alternative. We have developed a highly efficient model called Enthalpy-Based Thermal Evolution of Loops (EBTEL) that accurately describes the evolution of the average temperature, pressure, and density along a coronal strand. It improves significantly upon earlier models of this type--in accuracy, flexibility, and capability. It treats both slowly varying and highly impulsive coronal heating; it provides the differential emission measure distribution, DEM(T), at the transition region footpoints; and there are options for heat flux saturation and nonthermal electron beam heating. EBTEL gives excellent agreement with far more sophisticated 1D hydro simulations despite using four orders of magnitude less computing time. It promises to be a powerful new tool for solar and stellar studies.

J. A. Klimchuk; S. Patsourakos; P. J. Cargill

2007-10-01T23:59:59.000Z

164

Jordan cells of periodic loop models  

E-Print Network (OSTI)

Jordan cells in transfer matrices of finite lattice models are a signature of the logarithmic character of the conformal field theories that appear in their thermodynamical limit. The transfer matrix of periodic loop models, T_N, is an element of the periodic Temperley-Lieb algebra EPTL_N(\\beta, \\alpha), where N is the number of sites on a section of the cylinder, and \\beta = -(q+1/q) = 2 \\cos \\lambda and \\alpha the weights of contractible and non-contractible loops. The thermodynamic limit of T_N is believed to describe a conformal field theory of central charge c=1-6\\lambda^2/(\\pi(\\lambda-\\pi)). The abstract element T_N acts naturally on (a sum of) spaces V_N^d, similar to those upon which the standard modules of the (classical) Temperley-Lieb algebra act. These spaces known as sectors are labeled by the numbers of defects d and depend on a {\\em twist parameter} v that keeps track of the winding of defects around the cylinder. Criteria are given for non-trivial Jordan cells of T_N both between sectors with distinct defect numbers and within a given sector.

Alexi Morin-Duchesne; Yvan Saint-Aubin

2013-02-22T23:59:59.000Z

165

Wilson loops in warped resolved deformed conifolds  

Science Conference Proceedings (OSTI)

We calculate quark-antiquark potentials using the relationship between the expectation value of the Wilson loop and the action of a probe string in the string dual. We review and categorise the possible forms of the dependence of the energy on the separation between the quarks. In particular, we examine the possibility of there being a minimum separation for probe strings which do not penetrate close to the origin of the bulk space, and derive a condition which determines whether this is the case. We then apply these considerations to the flavoured resolved deformed conifold background of Gaillard et al. (2010) . We suggest that the unusual behaviour that we observe in this solution is likely to be related to the IR singularity which is not present in the unflavoured case. - Highlights: > We calculate quark-antiquark potentials using the Wilson loop and the action of a probe string in the string dual. > We review and categorise the possible forms of the dependence of the energy on the separation between the quarks. > We look in particular at the flavoured resolved deformed conifold. > There appears to be unusual behaviour which seems likely to be related to the IR singularity introduced by flavours.

Bennett, Stephen, E-mail: pystephen@swansea.ac.uk

2011-11-15T23:59:59.000Z

166

Cascading Closed Loop Cycle Power Generation  

E-Print Network (OSTI)

WOW Energies was issued Patent 6,857,268 B2 on Feb 22, 2005 titled CASCADING CLOSED LOOP CYCLE (CCLC) and Patent 7,096,665 B2 on August 29, 2006 titled CASCADING CLOSED LOOP CYCLE POWER GENERATION. These patented technologies are collectively marketed as WOWGen. The WOW Energies patents represent the production of efficient power from low, medium and high temperature heat generated from the combustion of fuels; heat from renewable energy sources such as solar and geothermal heat; or waste heat sources. Waste heat sources can be in the form of exhaust stack flue gases; waste heat from vented steam or steam discharged from steam turbines; hot water; hot oils or combined waste heat sources. A major advantage of the WOWGen power plant is the ability to produce power without the use, consumption or contamination of valuable water resources. Production of power from waste heat and renewable energy sources is the most viable path to energy independence from foreign oil and reduced emissions from the combustion of fossil fuels. The WOWGen power plant inherently reduces emissions and Greenhouse Gases (GHG) by producing power from waste heat without consuming fuel, thus increasing the overall energy efficiency of any industrial plant or power generation facility. The presentation will focus on the technology and provide case studies of its application.

Romero, M.

2008-01-01T23:59:59.000Z

167

BAYESIAN MAGNETOHYDRODYNAMIC SEISMOLOGY OF CORONAL LOOPS  

SciTech Connect

We perform a Bayesian parameter inference in the context of resonantly damped transverse coronal loop oscillations. The forward problem is solved in terms of parametric results for kink waves in one-dimensional flux tubes in the thin tube and thin boundary approximations. For the inverse problem, we adopt a Bayesian approach to infer the most probable values of the relevant parameters, for given observed periods and damping times, and to extract their confidence levels. The posterior probability distribution functions are obtained by means of Markov Chain Monte Carlo simulations, incorporating observed uncertainties in a consistent manner. We find well-localized solutions in the posterior probability distribution functions for two of the three parameters of interest, namely the Alfven travel time and the transverse inhomogeneity length scale. The obtained estimates for the Alfven travel time are consistent with previous inversion results, but the method enables us to additionally constrain the transverse inhomogeneity length scale and to estimate real error bars for each parameter. When observational estimates for the density contrast are used, the method enables us to fully constrain the three parameters of interest. These results can serve to improve our current estimates of unknown physical parameters in coronal loops and to test the assumed theoretical model.

Arregui, I. [Departament de Fisica, Universitat de les Illes Balears, E-07122, Palma de Mallorca (Spain); Asensio Ramos, A., E-mail: inigo.arregui@uib.es, E-mail: aasensio@iac.es [Instituto de Astrofisica de Canarias, E-38205, La Laguna, Tenerife (Spain)

2011-10-10T23:59:59.000Z

168

Urban Modification of Freezing-Rain Events  

Science Conference Proceedings (OSTI)

A new national database for freezing-rain occurrences during the 19452000 period provided an opportunity for a study of the potential urban effects on freezing-rain events. Numerous past studies of snowfall events in urban areas have defined ...

Stanley A. Changnon

2003-06-01T23:59:59.000Z

169

Innovative Manufactured Housing Urban Design Demonstration Project  

Science Conference Proceedings (OSTI)

One quarter of the new houses sold in the United States in 1999 were manufactured homes, and manufactured housing represents an important and growing market for power producers. One niche market opportunity for manufactured homes is in urban areas. EPRI facilitated the completion of two limited demonstrations of energy efficient manufactured homes designed specifically for urban neighborhoods.

2000-10-05T23:59:59.000Z

170

Study of Pollutant Dispersion in Urban Environments  

E-Print Network (OSTI)

-17 June, University of Osnabruck, Germany. 9. Simonite, T., 2005, Anti-terror study tracks gas dispersalStudy of Pollutant Dispersion in Urban Environments Razvan Corneliu Carbunescu Center head: Study of pollutant dispersion in urban environments #12;Abstract Computational simulations can

Allen, Gabrielle

171

Source to tap urban water cycle modelling  

Science Conference Proceedings (OSTI)

The continuous expansion of urban areas is associated with increased water demand, both for domestic and non-domestic uses. To cover this additional demand, centralised infrastructure, such as water supply and distribution networks tend to become more ... Keywords: Metabolism models, Optimisation, Urban water cycle, Water demand management

Evangelos Rozos; Christos Makropoulos

2013-03-01T23:59:59.000Z

172

Maximum Urban Heat Island Intensity in Seoul  

Science Conference Proceedings (OSTI)

The maximum urban heat island (UHI) intensity in Seoul, Korea, is investigated using data measured at two meteorological observatories (an urban site and a rural site) during the period of 197396. The average maximum UHI is weakest in summer and ...

Yeon-Hee Kim; Jong-Jin Baik

2002-06-01T23:59:59.000Z

173

Off-Criticality and the Massive Brownian Loop Soup  

E-Print Network (OSTI)

The Brownian loop soup is a conformally invariant Poissonian ensemble of loops in the plane recently introduced by Lawler and Werner. It has attracted significant attention for its connection to the Schramm-Loewner Evolution and Conformal Loop Ensembles and its consequent ability to describe the critical scaling limit of two-dimensional statistical mechanical models. In this paper, we introduce a natural "massive" (non-scale-invariant) version of the Brownian loop soup as a candidate to describe near-critical scaling limits, and study some of its properties, such as conformal covariance, exponential decay of correlations, and Hausdorff dimension. We also show that the massive Brownian loop soup arises as the near-critical scaling limit of a "gas" of random walk loops which is closely related to the discrete Gaussian free field.

Federico Camia

2013-09-24T23:59:59.000Z

174

Geothermal Ground-Loop Preinstallation Project at Walden Pond  

Science Conference Proceedings (OSTI)

Geothermal ground-source heat pumps can help utilities increase electricity sales while reducing peak demands, but high ground-loop installation costs are a barrier to widespread acceptance. This project, conducted with Public Service Company of Indiana, demonstrated that mass installation of ground loops in a residential subdivision prior to home construction can substantially reduce installed cost for both horizontal and vertical loop configurations.

1990-09-05T23:59:59.000Z

175

Direct-contact closed-loop heat exchanger  

DOE Patents (OSTI)

A high temperature heat exchanger with a closed loop and a heat transfer liquid within the loop, the closed loop having a first horizontal channel with inlet and outlet means for providing direct contact of a first fluid at a first temperature with the heat transfer liquid, a second horizontal channel with inlet and outlet means for providing direct contact of a second fluid at a second temperature with the heat transfer liquid, and means for circulating the heat transfer liquid.

Berry, Gregory F. (Naperville, IL); Minkov, Vladimir (Skokie, IL); Petrick, Michael (Joliet, IL)

1984-01-01T23:59:59.000Z

176

The Quantum Configuration Space of Loop Quantum Cosmology  

E-Print Network (OSTI)

The article gives an account of several aspects of the space known as the Bohr compactification of the line, featuring as the quantum configuration space in loop quantum cosmology, as well as of the corresponding configuration space realization of the so-called polymer representation. Analogies with loop quantum gravity are explored, providing an introduction to (part of) the mathematical structure of loop quantum gravity, in a technically simpler context.

J. M. Velhinho

2007-04-18T23:59:59.000Z

177

Evolution and dynamics of cusped light-like Wilson loops  

E-Print Network (OSTI)

We discuss the possible relation between the singular structure of TMDs on the light-cone and the geometrical behaviour of rectangular Wilson loops.

Frederik F. Van der Veken

2013-02-27T23:59:59.000Z

178

Open versus closed loop capacity equilibria in electricity markets ...  

E-Print Network (OSTI)

May 7, 2012 ... Open versus closed loop capacity equilibria in electricity markets under ... We also present and analyze alternative conjectured price response...

179

Chemical Looping Combustion Prototype for CO2 Capture from Existing...  

NLE Websites -- All DOE Office Websites (Extended Search)

looping combustion prototype based on successful development and testing of a 65 kW (thermal) pilot-scale system under a previous Department of Energy (DOE) cooperative...

180

Chemical Looping Gasification for Hydrogen Enhanced Syngas Production...  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemical Looping Gasification for Hydrogen Enhanced Syngas Production with In-Situ CO2 Capture The Ohio State University (OSU) Project Number: FE0012136 Project Description The...

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Precipitation and scaling in dynamic geothermal systems. [Titanium loop facility  

DOE Green Energy (OSTI)

A dynamic loop facility for studying scaling in simulated geothermal brines--under conditions such as will be encountered in engineering scale heat transfer equipment is being constructed. The first phase of the program consists of two principal efforts: (1) modification of an existing 100 gpm titanium loop to provide the engineering scaling test facility and (2) operation of an approximately 1 gph once-through (experimental) system to provide design data for titanium loop modifications to provide experience with scale formation and characterization. This experience is being used in planning the scaling studies to be conducted in the dynamic loop facility. The status of the project is described.

Bohlmann, E.G.; Shor, A.J.; Berlinski, P.

1976-10-01T23:59:59.000Z

182

Bosonic (meta)stabilization of cosmic string loops  

E-Print Network (OSTI)

We consider the possibility of a bosonic (meta)stabilization of a cosmic gauge string loop due to the presence of a gas of low mass bosonic particles which become trapped within the string core. This boson gas exerts a pressure which tends to counteract the string tension, allowing a circular string loop to find a finite equilibrium radius, provided that gas particles do not escape the string core. However, high energy bosons do escape, and consequently the loop shrinks and the temperature rises. Estimates indicate that the bosonic stabilization mechanism is ineffective, and the loop is unstable against decay.

J. R. Morris

2013-03-08T23:59:59.000Z

183

Experimental and computational studies of loop heat pipes.  

E-Print Network (OSTI)

??Computational and experimental investigations of fluid flow and heat transfer aspects of loop heat pipes (LHPs) are presented in this thesis. The overall goal is (more)

Atabaki, Nima.

2006-01-01T23:59:59.000Z

184

NETL: Novel Oxygen Carriers for Coal-Fueled Chemical Looping...  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemical Looping Combustion Project No.: DE-FE0001808 NETL has partnered with Western Kentucky University to develop a series of advanced oxygen carriers for coal-fueled...

185

Geothermal Loop Experimental Facility. Final report  

DOE Green Energy (OSTI)

Research at the Geothermal Loop Experimental Facility was successfully concluded in September 1979. In 13,000 hours of operation over a three and one half year period, the nominal 10 megawatt electrical equivalent GLEF provided the opportunity to identify problems in working with highly saline geothermal fluids and to develop solutions that could be applied to a commercial geothermal power plant producing electricity. A seven and one half year period beginning in April 1972, with early well flow testing and ending in September 1979, with the completion of extensive facility and reservoir operations is covered. During this period, the facility was designed, constructed and operated in several configurations. A comprehensive reference document, addressing or referencing documentation of all the key areas investigated is presented.

Not Available

1980-04-01T23:59:59.000Z

186

The HTGR Closed - Loop Energy System  

E-Print Network (OSTI)

This paper summarizes some of the studies performed during the past several years on the application of the high temperature gas-cooled reactor (HTGR) to the U.S. industrial energy market. The specific concept utilizes a closed-loop thermo chemical pipe (TCP), combined with the HTGR to serve dispersed industrial heat and electrical loads. Heat in various forms can be supplied at temperatures up to about 1700 F. The system substitutes nuclear energy for fluid fuels, conserves energy compared to many alternatives, and features zero emissions at the user site. Potential U.S. market size for the HTGR/TCP system appears to be approximately 8 quads per year (300 GWT to 400 GWT) in the 2000 to 2020 time period. The current U.S. HTGR development program is focused on industrial heat applications.

Leeth, G. G.

1981-01-01T23:59:59.000Z

187

Open-loop heat-recovery dryer  

DOE Patents (OSTI)

A drying apparatus is disclosed that includes a drum and an open-loop airflow pathway originating at an ambient air inlet, passing through the drum, and terminating at an exhaust outlet. A passive heat exchanger is included for passively transferring heat from air flowing from the drum toward the exhaust outlet to air flowing from the ambient air inlet toward the drum. A heat pump is also included for actively transferring heat from air flowing from the passive heat exchanger toward the exhaust outlet to air flowing from the passive heat exchanger toward the drum. A heating element is also included for further heating air flowing from the heat pump toward the drum.

TeGrotenhuis, Ward Evan

2013-11-05T23:59:59.000Z

188

ABJ Fractional Brane from ABJM Wilson Loop  

E-Print Network (OSTI)

We present a new Fermi gas formalism for the ABJ matrix model. This formulation takes a form that identifies the effect of the fractional M2-brane in the ABJ matrix model as that of a composite Wilson loop operator in the corresponding ABJM matrix model. Using this formalism, we study the phase dependence of the ABJ partition function numerically and find a simple rule for it. We further compute first few exact values at some coupling constants. Fitting these exact values against the expected form of the grand potential we can write down the grand potential with exact coefficients. The results at various coupling constants enable us to conjecture an explicit form of the grand potential for general coupling constants. This matches with a natural generalization of the perturbative sum, worldsheet instantons and bound states from the ABJM matrix model, but contains a minor difference in the membrane instantons.

Sho Matsumoto; Sanefumi Moriyama

2013-10-30T23:59:59.000Z

189

Dynamical Detection on Urban Sprawl Based on EO Data  

Science Conference Proceedings (OSTI)

With the development of society and economy, the rapid urban sprawl in land use is being witnessed of late in urban districts. As a result, many problems in society and environment have appeared in urban districts, such as population expansion, air pollution, ... Keywords: EO data, GIS, Integration, RS, urban spraw

Pan Hongyi; Peng Wenfu; He Wei; Jiang Guiguo; Zhou Jieming; Zhou Wancun

2009-05-01T23:59:59.000Z

190

Prediction and visualization for urban heat island simulation  

Science Conference Proceedings (OSTI)

The simulation and forecast of urban heat island effect was studied. Since the reason for the formation of urban heat island is complex, the current model cannot take all the influence factors into consideration. When a new influence factor is introduced, ... Keywords: genetic algorithm, information visual, neural network, urban air temperature simulation, urban heat island

Bin Shao; Mingmin Zhang; Qingfeng Mi; Nan Xiang

2011-01-01T23:59:59.000Z

191

Urban and Regional Air Quality  

NLE Websites -- All DOE Office Websites (Extended Search)

equipment equipment Urban and Regional Air Quality Research in this area is concerned with regional air quality issues such as: Controlling nitrogen oxides (NOx) and volatile organic compounds, to manage tropospheric ozone pollution. Hazardous air pollutants: using science to base standards on rigorously studied risks. Air quality and climate: how does climate influence air quality at a regional or local level? Current modeling practices often do not capture variations in pollutants such as ozone-they represent a limited sample of the diverse meteorology and human behavior that affect air pollution. Improved modeling of regional air quality will help understand variability, reveal patterns of behavior, and pollutant transport issues. Controlled experiments in lab and field can help validate improved models.

192

Feature Exploration for Mining Coronal Loops from Solar Images  

Science Conference Proceedings (OSTI)

Coronal loops are especially important in analyzing some important phenomena related to the Sun such as the controversial coronal heating problem. The analysis requires astrophysicists to manually sift through thousands of images in order to acquire ... Keywords: feature extraction, coronal loops, SOHO, data mining, solar

Nurcan Durak; Olfa Nasraoui

2008-11-01T23:59:59.000Z

193

Electricity generation with looped transmission networks: Bidding to an ISO  

E-Print Network (OSTI)

Electricity generation with looped transmission networks: Bidding to an ISO Xinmin Hu Daniel Ralph to model markets for delivery of electrical power on looped transmission networks. It analyzes in transmission capacity mean the ISO potentially sets a different electricity price at each node of the trans

Ferris, Michael C.

194

The Spectrum of Loop Current Variability from Gappy Data  

Science Conference Proceedings (OSTI)

The goal of this work was to understand the rate at which large anticyclonic rings are shed from the Loop Current in the Gulf of Mexico. The northward penetration of the Loop Current is used here as a surrogate variable. Data are primarily from ...

Wilton Sturges

1992-11-01T23:59:59.000Z

195

Singlet Free Energies and Renormalized Polyakov Loop in full QCD  

E-Print Network (OSTI)

We calculate the free energy of a static quark anti-quark pair and the renormalized Polyakov loop in 2+1- and 3- flavor QCD using $16^3 \\times 4$ and $16^3 \\times 6$ lattices and improved staggered p4 action. We also compare the renormalized Polyakov loop with the results of our earlier studies.

K. Petrov

2006-10-05T23:59:59.000Z

196

URANIUM-BISMUTH IN-PILE CORROSION TEST LOOP. RADIATION LOOP NO. 1  

SciTech Connect

A loop was operated in the Brookhaven Graphite Research Reactor to determine the effect of in-pile irradiation on the corrosion of various materials by a U-- Bi solution. The loop wws fabricated of 21/4% chrome-1% Mo steel and contained, in the in-pile section, specimens of low-chrome steels, C steel, Mo, Be, Ta, and graphite. The U--Bi solution containing 869 ppm U/sup 235/ 98 ppm U/ sup 238/, 236 ppm Zr, and 346 ppm Mg was circulated at 51/4 gpm. A temperature difference of 75 deg C was maintained on the loop. The in-pile test section ran at 500 deg C and the finned cooler section at 425 deg C. The in-pile test section was exposed to a neutron flux of 4.4 x 10/sup 12/ neutrons/cm/sup 2/-sec which provided a fission density of 5.5 x 10/sup 10/ fissions/cm/sup 3/-sec. Metallographic examination indicated that the corrosion and/or erosion of the steel and graphite specimens was nil. Wetting of the specimens by the U-Bi solution was limited. Results indicate that in-pile and out-of-pile experimental results are similar and that fission fragment recoils did not contribute materially to either wetting or corrosion under the conditions imposed in this test. (auth)

Waide, C.H.; Kukacka, L.E.; Meyer, R.A.; Milau, J.; Klein, J.H.; Chow, J.G.Y.; Klamut, C.J.; Gurinsky, D.H.

1961-05-01T23:59:59.000Z

197

Solid looping cycles: A new technology for coal conversion  

SciTech Connect

This article examines both oxygen looping cycles (otherwise known as chemical looping combustion), and lime-based CO{sub 2} looping cycles, where calcined limestone is used for in situ CO{sub 2} capture. There has been a rapid rise in the amount of research carried out recently, and both technologies are likely to see practical application in the near future. However, these technologies urgently require demonstration at the large pilot-plant level - in the case of chemical looping cycles for use with high-pressure syngas of the type likely to be produced by current coal gasification technologies and in the case of CO{sub 2} looping cycles both for combustion and gasification applications with coal. Both approaches have potential for application in schemes for H{sub 2} production, but these have not been considered here, although such applications will also inevitably follow in the medium to long term.

Anthony, E.J. [CANMET Energy Technology Centre Ottawa, Ottawa, ON (Canada). Natural Resources Canada

2008-03-19T23:59:59.000Z

198

A thermodynamic model for agglomeration of DNA-looping proteins  

E-Print Network (OSTI)

In this paper, we propose a thermodynamic mechanism for the formation of transcriptional foci via the joint agglomeration of DNA-looping proteins and protein-binding domains on DNA: The competition between the gain in protein-DNA binding free energy and the entropy loss due to DNA looping is argued to result in an effective attraction between loops. A mean-field approximation can be described analytically via a mapping to a restricted random-graph ensemble having local degree constraints and global constraints on the number of connected components. It shows the emergence of protein clusters containing a finite fraction of all looping proteins. If the entropy loss due to a single DNA loop is high enough, this transition is found to be of first order.

Sumedha; Martin Weigt

2008-01-09T23:59:59.000Z

199

Urban Transportation Emission Calculator | Open Energy Information  

Open Energy Info (EERE)

Urban Transportation Emission Calculator Urban Transportation Emission Calculator Jump to: navigation, search Tool Summary Name: Urban Transportation Emission Calculator Agency/Company /Organization: Transport Canada Sector: Energy Focus Area: Transportation Topics: GHG inventory Resource Type: Software/modeling tools User Interface: Website Website: wwwapps.tc.gc.ca/Prog/2/UTEC-CETU/Menu.aspx?lang=eng Cost: Free References: http://wwwapps.tc.gc.ca/Prog/2/UTEC-CETU/Menu.aspx?lang=eng The Urban Transportation Emissions Calculator (UTEC) is a user-friendly tool for estimating annual emissions from personal, commercial, and public transit vehicles. It estimates greenhouse gas (GHG) and criteria air contaminant (CAC) emissions from the operation of vehicles. It also estimates upstream GHG emissions from the production, refining and

200

Home | Buildings Technology & Urban Systems Department  

NLE Websites -- All DOE Office Websites (Extended Search)

Lab Buildings & Urban Systems Buildings Lab Buildings & Urban Systems Buildings Technology & Urban Systems Department Search Search Home About Us Groups Tools & Guides Facilities Publications News Links Contact Us Staff The Building Technology and Urban Systems Department (BTUS) works closely with industry to develop technologies for buildings that increase energy efficiency, and improve the comfort, health, and safety of building occupants. Berkeley Lab Hosts 5 Emerging Leaders During TechWomen 2013 As part of TechWomen 2013, emerging leaders from around the world toured a number of scientific facilities in the Bay Area, including the Advanced Light Source at Berkeley Lab. Pho Read More The Retrocommissioning Sensor Suitcase Brings Energy Efficiency to Small Commercial Buildings The data module communicates wirelessly with the smart pad, which launches

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

The urban garden : Port Alliance, Texas  

E-Print Network (OSTI)

This thesis focuses on of three urban parks; Central Park i n New York , the Fens to Franklin Park in Boston, and Rock Creek Park in washington, designed by Frederick Law Olmsted and the growth of the cities around them. ...

Manning, Isaac Hall, 1958-

1990-01-01T23:59:59.000Z

202

Webinar: Tapping Into Wind in Urban Environments  

Energy.gov (U.S. Department of Energy (DOE))

This live webinar presented by DOE on"Community Renewable Energy Success Stories: Tapping into Wind in Urban Environments" will take placeon Tuesday, September 18, 2012, from 3:00 4:15 p.m....

203

Metromorphosis : evolution on the urban island  

E-Print Network (OSTI)

Cities are very much alive. Like islands, they provide a natural testing ground for evolution. With more than half of the world's population living in urban areas now, the influence cities have on the planet's life is ...

Vezina, Kenrick (Kenrick Freitas)

2011-01-01T23:59:59.000Z

204

Mesh network model for urban area  

E-Print Network (OSTI)

Decreasing population, high crime rate, and limited economic opportunities are all symptoms of urban decline. These characteristics are, unfortunately, evident in major cities and small towns. Local municipalities in these ...

Chiang, Nhan Tu

2008-01-01T23:59:59.000Z

205

Urban Behavioral Simulation and 3D Visualization  

NLE Websites -- All DOE Office Websites (Extended Search)

UrbanSim is a micro-simulation model system that represents the location choices of households and firms within the region, and the choices of real estate developers to construct...

206

Urban Heat Island Assessment: Metadata Are Important  

Science Conference Proceedings (OSTI)

Urban heat island (UHI) analyses for the conterminous United States were performed using three different forms of metadata: nightlights-derived metadata, map-based metadata, and gridded U.S. Census Bureau population metadata. The results ...

Thomas C. Peterson; Timothy W. Owen

2005-07-01T23:59:59.000Z

207

Ecotransology : integrated design for urban mobility  

E-Print Network (OSTI)

This thesis demonstrates a rethinking of urban mobility through ecological design. Human mobility and ecological accountability are inextricably linked in city design; our current world ecological crisis underscores this ...

Joachim, Mitchell Whitney

2006-01-01T23:59:59.000Z

208

Flow and Turbulence in an Urban Canyon  

Science Conference Proceedings (OSTI)

A better understanding of the interaction between the built environment and the atmosphere is required to more effectively manage urban airsheds. This paper reports an analysis of data from an atmospheric measurement campaign in Oklahoma City, ...

D. Zajic; H. J. S. Fernando; R. Calhoun; M. Princevac; M. J. Brown; E. R. Pardyjak

2011-01-01T23:59:59.000Z

209

Sustainable and equitable urban environments in Asia  

E-Print Network (OSTI)

This study identifies some of the factors and conditions that can encourage the development of sustainable and equitable urban environments. It argues that cities will continue to grow and that it is not productive to view ...

Badshah, Akhtar

1993-01-01T23:59:59.000Z

210

Urban Cloud Condensation Nuclei Spectral Flux  

Science Conference Proceedings (OSTI)

The cloud condensation nuclei (CCN) spectral flux and the condensation nuclei (CN) flux from an urban area are determined from in situ aircraft measurements at Denver, Colorado. The concentration differences between upwind and downwind cross ...

Paul R. Frisbie; James G. Hudson

1993-04-01T23:59:59.000Z

211

New urban housing in Seoul, Korea  

E-Print Network (OSTI)

For the last three decades, the capital city of Korea, Seoul, has experienced an explosive increase in population and rapid urbanization. This increase has led to a severe housing shortage in Seoul. The government responded ...

Lee, Kwanghyun, 1971-

2001-01-01T23:59:59.000Z

212

Beyond opposites : an urban initiative in Seoul  

E-Print Network (OSTI)

The thesis began with the understanding of urban, cultural, and social conditions of Seoul. The choice of the existing bridge as the point of departure has meaning in two layers. layer one: the need for more space in the ...

Moon, Hoon

1993-01-01T23:59:59.000Z

213

Urban solarium : thermal performance in Boston  

E-Print Network (OSTI)

This thesis addresses the issue of energy efficiency through the lens of thermal performance in the context of urban housing in the city of Boston. Located in the historic brick row house neighborhood of the South End, the ...

Hsu, Juliet Chia-Wen

2012-01-01T23:59:59.000Z

214

Urban Aerosol Impacts on Downwind Convective Storms  

Science Conference Proceedings (OSTI)

The impacts of urban-enhanced aerosol concentrations on convective storm development and precipitation over and downwind of St. Louis, Missouri, are investigated. This is achieved through the use of a cloud-resolving mesoscale model, in which ...

Susan C. van den Heever; William R. Cotton

2007-06-01T23:59:59.000Z

215

Underground Distribution: Urban Network Practices Survey - 2012  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) has undertaken a multiyear research effort to identify and describe leading industry practices for managing urban network systems in the key functional areas of planning, design, construction, maintenance, operations, and safety. This report summarizes the results of the 2012 survey of urban network practices issued by EPRI and provides comparisons to a similar survey issued by EPRI in 2009.

2012-07-11T23:59:59.000Z

216

Assessing urban and rural neighborhood characteristics using audit and GIS data: derivation and reliability of constructs  

E-Print Network (OSTI)

Bureau: Census 2000 urban and rural classifications. 2009 [Assessing urban and rural neighborhood characteristics usingreliability in both urban and rural segments (r = 0.96).

Evenson, Kelly R; Sotres-Alvarez, Daniela; Herring, Amy H; Messer, Lynne; Laraia, Barbara A; Rodrguez, Daniel A

2009-01-01T23:59:59.000Z

217

Consistent probabilities in loop quantum cosmology  

E-Print Network (OSTI)

A fundamental issue for any quantum cosmological theory is to specify how probabilities can be assigned to various quantum events or sequences of events such as the occurrence of singularities or bounces. In previous work, we have demonstrated how this issue can be successfully addressed within the consistent histories approach to quantum theory for Wheeler-DeWitt-quantized cosmological models. In this work, we generalize that analysis to the exactly solvable loop quantization of a spatially flat, homogeneous and isotropic cosmology sourced with a massless, minimally coupled scalar field known as sLQC. We provide an explicit, rigorous and complete decoherent histories formulation for this model and compute the probabilities for the occurrence of a quantum bounce vs. a singularity. Using the scalar field as an emergent internal time, we show for generic states that the probability for a singularity to occur in this model is zero, and that of a bounce is unity, complementing earlier studies of the expectation values of the volume and matter density in this theory. We also show from the consistent histories point of view that all states in this model, whether quantum or classical, achieve arbitrarily large volume in the limit of infinite `past' or `future' scalar `time', in the sense that the wave function evaluated at any arbitrary fixed value of the volume vanishes in that limit. Finally, we briefly discuss certain misconceptions concerning the utility of the consistent histories approach in these models.

David A. Craig; Parampreet Singh

2013-06-26T23:59:59.000Z

218

Laser photon statistics in the feedback loop  

E-Print Network (OSTI)

A mere correspondence between the electron statistics and the photon one vanishes in the feedback loop (FBL). It means that the direct photodetection, supplying us with the electron statistics, does not provide us with a wished information about the laser photon statistics. For getting this information we should think up another measurement procedure, and we in the article suggest applying the three-level laser as a auxiliary measuring device. This laser has impressive property, namely, its photon statistics survive information about the initial photon statistics of the laser which excites coherently the three-level medium. Thus, if we choose the laser in the FBL as exciting the three-level laser, then we have an possibility to evaluate its initial photon statistics by means of direct detecting the three-level laser emission. Finally, this approach allows us to conclude the feedback is not capable of creating a regularity in the laser light beam. Contrary, the final photon fluctuations turn out to be always even bigger. The mentioned above feature of the three-level laser takes place only for the strong interaction between the lasers (exciting and excited). It means the initial state of the exciting laser is changed dramatically, so our measurement procedure can not be identified with some non-demolition one.

T. Yu. Golubeva; Yu. M. Golubev

2005-04-23T23:59:59.000Z

219

TS LOOP NON-POTABLE PUMP EVALUATION  

SciTech Connect

This analysis evaluates the existing subsurface non-potable water system from the portal pump to the end of the water line in the South Ramp and determines if the pump size and spacing meets the system pressure and flow requirements for construction operations and incipient fire fighting capability as established in the Subsurface Fire Hazards Analysis (CRWMS M&O 1998b). This analysis does not address the non potable water system in the Cross Drift which is covered under a previous design analysis (CRWMS-M&O 1998a). The Subsurface Fire Hazards Analysis references sections of OSHA 29 CFR 1910 Subpart L for requirements applicable to the incipient fire fighting hose stations used underground. This analysis does not address mechanical system valves, fittings, risers and other components of the system piping. This system is not designed or intended to meet all National Fire Protection Association (NFPA) codes for a fire fighting system but is only considered a backup system to fire extinguishers that are installed throughout the Topopah Springs (TS) Loop and may be used to fight small incipient stage fires.

S. Goodin

1999-05-14T23:59:59.000Z

220

EA-1885: Boston Architectural College's Urban Sustainability...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

construct and implement the renovation of Public Alley 444 in Boston's Historic Back Bay District. The project would include the installation of 7 to 10 open loop geothermal wells...

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

EXAMINATION OF Zr AND Ti RECOMBINER LOOP SPECIMENS  

DOE Green Energy (OSTI)

Cold-worked specimens of iodide zirconium, Zircaloy-2, iodide titanium, and A-55 titanium were tested in a high-pressure recombiner loop in an attempt to duplicate anomalous results obtained in a prior recombiner loop. Hydrogen analyses and metallographic examinations were made on all specimens. The titanium materials and Zircaloy-2 picked up major amounts of hydrogen in the cell section. None of the materials tested showed appreciable hydrogen absorption in the recombiner section. Complete recrystallization occurred in all cell specimens while only Zircaloy-2, of the recombiner specimens, showed any degree of recrystallization. No explanation for this behavior can be given. A survnnary of the data obtained in previous recombiner loops is compared with the results of this loop. Conclusions were based on the results of three recombiner loops. Primarlly because of the hydrogen absorption data obtained in all three recombiner loops it is recommended that the zirconium and titunium materials tested not be used in environments similar to those encountered in high pressure recombiner loops. (auth)

Rittenhouse, P.L.

1958-12-19T23:59:59.000Z

222

Observation of multiple sausage oscillations in cool postflare loop  

E-Print Network (OSTI)

Using simultaneous high spatial (1.3 arc sec) and temporal (5 and 10 s) resolution H-alpha observations from the 15 cm Solar Tower Telescope at ARIES, we study the oscillations in the relative intensity to explore the possibility of sausage oscillations in the chromospheric cool postflare loop. We use standard wavelet tool, and find the oscillation period of ~ 587 s near the loop apex, and ~ 349 s near the footpoint. We suggest that the oscillations represent the fundamental and the first harmonics of fast sausage waves in the cool postflare loop. Based on the period ratio P1/P2 ~ 1.68, we estimate the density scale height in the loop as ~ 17 Mm. This value is much higher than the equilibrium scale height corresponding to H-alpha temperature, which probably indicates that the cool postflare loop is not in hydrostatic equilibrium. Seismologically estimated Alfv\\'en speed outside the loop is ~ 300-330 km/s. The observation of multiple oscillations may play a crucial role in understanding the dynamics of lower solar atmosphere, complementing such oscillations already reported in the upper solar atmosphere (e.g., hot flaring loops).

A. K. Srivastava; T. V. Zaqarashvili; W. Uddin; B. N. Dwivedi; Pankaj Kumar

2008-06-05T23:59:59.000Z

223

OZONE PRODUCTION IN URBAN PLUMES.  

SciTech Connect

Ozone levels observed during a field campaign in Houston were significantly higher than that observed in Phoenix or Philadelphia. An examination of the slope of O{sub x} versus NO{sub z} in the urban plumes shows that NO{sub x} is used 2 to 3 times more efficiently in Houston as compared with Phoenix and Philadelphia. Representative values of OPEx are 7-12, 3, and 4, in Houston, Phoenix, and Philadelphia. Aircraft observations have been used to calculate P(O{sub 3})/P(NO{sub z}). Values in Houston are significantly higher than in Phoenix and Philadelphia. We show that P(O{sub 3})/P(NO{sub z}) is proportional to a VOC/NO{sub 2}-OH reactivity ratio. High values of P(O{sub 3})/P(NO{sub z}) in Houston are due to emissions of reactive olefins from the ship channel region. It is significant that high values of P(O{sub 3})/P(NO{sub z}) occur at NO{sub x} levels up to several 10's of ppb. Not only is the chemistry efficient but it will be long lasting. The occurrence of high NO{sub x} and high OPEx is fostered by the co-location of VOC and NO{sub x} sources in the Houston industrial areas.

KLEINMAN,L.

2001-09-17T23:59:59.000Z

224

Iterational retiming: Maximize iteration-level parallelism for nested loops  

E-Print Network (OSTI)

Nested loops are the most critical sections in many scientific and Digital Signal Processing (DSP) applications. It is important to study effective and efficient transformation techniques to increase parallelism for nested loops. In this paper, we propose a novel technique, iterational retiming, that can satisfy any given timing constraint by achieving full parallelism for iterations in a partition. Theorems and efficient algorithms are proposed for iterational retiming. The experimental results show that iterational retiming is a promising technique for parallel embedded systems. It can achieve 87% improvement over software pipelining and 88 % improvement over loop unfolding on average.

Chun Xue; Zili Shao; Meilin Liu; Edwin H. -m. Sha

2005-01-01T23:59:59.000Z

225

Fiber-bragg grating-loop ringdown method and apparatus  

Science Conference Proceedings (OSTI)

A device comprising a fiber grating loop ringdown (FGLRD) system of analysis is disclosed. A fiber Bragg grating (FBG) or Long-Period grating (LPG) written in a section of single mode fused silica fiber is incorporated into a fiber loop. By utilizing the wing areas of the gratings' bandwidth as a wavelength dependent attenuator of the light transmission, a fiber grating loop ringdown concept is formed. One aspect of the present invention is temperature sensing, which has been demonstrated using the disclosed device. Temperature measurements in the areas of accuracy, stability, high temperature, and dynamic range are also described.

Wang, Chuji (Starkville, MS)

2008-01-29T23:59:59.000Z

226

Fiber-bragg grating-loop ringdown method and apparatus  

DOE Patents (OSTI)

A device comprising a fiber grating loop ringdown (FGLRD) system of analysis is disclosed. A fiber Bragg grating (FBG) or Long-Period grating (LPG) written in a section of single mode fused silica fiber is incorporated into a fiber loop. By utilizing the wing areas of the gratings' bandwidth as a wavelength dependent attenuator of the light transmission, a fiber grating loop ringdown concept is formed. One aspect of the present invention is temperature sensing, which has been demonstrated using the disclosed device. Temperature measurements in the areas of accuracy, stability, high temperature, and dynamic range are also described.

Wang, Chuji (Starkville, MS)

2008-01-29T23:59:59.000Z

227

Zipping and Unzipping of Cosmic String Loops in Collision  

E-Print Network (OSTI)

In this paper the collision of two cosmic string loops is studied. After collision junctions are formed and the loops are entangled. We show that after their formation the junctions start to unzip and the loops disentangle. This analysis provides a theoretical understanding of the unzipping effect observed in numerical simulations of a network of cosmic strings with more than one type of cosmic strings. The unzipping phenomena have important effects in the evolution of cosmic string networks when junctions are formed upon collision, such as in a network of cosmic superstrings.

Hassan Firouzjahi; Johanna Karouby; Shahram Khosravi; Robert Brandenberger

2009-07-28T23:59:59.000Z

228

Direct-contact closed-loop heat exchanger  

DOE Patents (OSTI)

A high temperature heat exchanger is disclosed which has a closed loop and a heat transfer liquid within the loop, the closed loop having a first horizontal channel with inlet and outlet means for providing direct contact of a first fluid at a first temperature with the heat transfer liquid, a second horizontal channel with inlet and outlet means for providing direct contact of a second fluid at a second temperature with the heat transfer liquid, and means for circulating the heat transfer liquid.

Berry, G.F.; Minkov, V.; Petrick, M.

1981-11-02T23:59:59.000Z

229

Equivalence of string and fusion loop-spin structures  

E-Print Network (OSTI)

The importance of the fusion relation of loops was recognized in the context of spin structures on the loop space by Stolz and Teichner and further developed by Waldorf. On a spin manifold M the equivalence classes of `fusive' spin structures on the loop space LM, incorporating the fusion property, strong regularity and reparameterization-invariance, are shown to be in 1-1 correspondence with equivalence classes of string structures on M. The identification is through the affine space of `string' cohomology classes considered by Redden.

Chris Kottke; Richard Melrose

2013-09-01T23:59:59.000Z

230

Roles of Urban Tree Canopy and Buildings in Urban Heat Island Effects: Parameterization and Preliminary Results  

Science Conference Proceedings (OSTI)

Urban heat island (UHI) effects can strengthen heat waves and air pollution episodes. In this study, the dampening impact of urban trees on the UHI during an extreme heat wave in the Washington, D.C., and Baltimore, Maryland, metropolitan area is ...

Christopher P. Loughner; Dale J. Allen; Da-Lin Zhang; Kenneth E. Pickering; Russell R. Dickerson; Laura Landry

2012-10-01T23:59:59.000Z

231

Smart Beijing: Correlation of Urban Electrical Energy Consumption with Urban Environmental Sensing for Optimizing Distribution Planning  

E-Print Network (OSTI)

Smart Beijing: Correlation of Urban Electrical Energy Consumption with Urban Environmental Sensing and investigates the environmental impact of the electrical energy consumer (transportation, buildings, street will be trained to recognize important city events and dynamics which will affect electrical power consumption

Beigl, Michael

232

Micro-scale simulation of the macro urban form: opportunities for exploring urban change and adaptation  

Science Conference Proceedings (OSTI)

Agent based models (ABM) and cellular automata (CA) micro-scale modeling have found abundant application in the area of urban land use and transport planning. These platforms enable a rich spatial representation of residential behavior. We present an ... Keywords: agent-based modeling, data driven simulation, social laboratory, urban growth,

Tim Baynes; Scott Heckbert

2009-05-01T23:59:59.000Z

233

Boosted Fast Flux Loop Alternative Cooling Assessment  

Science Conference Proceedings (OSTI)

The Gas Test Loop (GTL) Project was instituted to develop the means for conducting fast neutron irradiation tests in a domestic radiation facility. It made use of booster fuel to achieve the high neutron flux, a hafnium thermal neutron absorber to attain the high fast-to-thermal flux ratio, a mixed gas temperature control system for maintaining experiment temperatures, and a compressed gas cooling system to remove heat from the experiment capsules and the hafnium thermal neutron absorber. This GTL system was determined to provide a fast (E > 0.1 MeV) flux greater than 1.0E+15 n/cm2-s with a fast-to-thermal flux ratio in the vicinity of 40. However, the estimated system acquisition cost from earlier studies was deemed to be high. That cost was strongly influenced by the compressed gas cooling system for experiment heat removal. Designers were challenged to find a less expensive way to achieve the required cooling. This report documents the results of the investigation leading to an alternatively cooled configuration, referred to now as the Boosted Fast Flux Loop (BFFL). This configuration relies on a composite material comprised of hafnium aluminide (Al3Hf) in an aluminum matrix to transfer heat from the experiment to pressurized water cooling channels while at the same time providing absorption of thermal neutrons. Investigations into the performance this configuration might achieve showed that it should perform at least as well as its gas-cooled predecessor. Physics calculations indicated that the fast neutron flux averaged over the central 40 cm (16 inches) relative to ATR core mid-plane in irradiation spaces would be about 1.04E+15 n/cm2-s. The fast-to-thermal flux ratio would be in excess of 40. Further, the particular configuration of cooling channels was relatively unimportant compared with the total amount of water in the apparatus in determining performance. Thermal analyses conducted on a candidate configuration showed the design of the water coolant and Al-Hf alloy heat sink system is capable of maintaining all system components below their maximum temperature limits. The maximum temperature of this conduction cooling system, 224.2C (435.6 F) occurs in a small, localized region in the heat sink structure near the core mid-plane. The total coolant flow rate requirement for this configuration is 207 L/min (54.7 gpm). The calculated Flow Instability Ratio and Departure from Nucleate Boiling Ratio for this configuration under nominal conditions are 6.5 and 8.0, respectively, which safely exceed the minimum values of 2.0. Materials and fabrication issues inspection revealed that the neutron absorber would probably best be made from powdered Al3Hf mixed with aluminum powder and extruded or hot isostatically pressed. Although Al3Hf has not been specifically studied extensively, its mechanical and chemical properties should be very much like Al3Zr, which has been studied. Its behavior under irradiation should be very satisfactory, and resistance to corrosion will be investigated to a limited extent in planned miniplate irradiation tests in ATR. Pressurized water systems needed to effect heat removal are already available in the ATR complex, and mixed gas temperature control systems needed to trim experiment temperatures have been engineered and need only be fabricated and installed. In sum, it appears the alternately cooled configuration arrived at can be very successful. The cost estimate for this configuration indicates to

Glen R. Longhurst; Donna Post Guillen; James R. Parry; Douglas L. Porter; Bruce W. Wallace

2007-08-01T23:59:59.000Z

234

High Spatial Resolution Observations of Loops in the Solar Corona  

E-Print Network (OSTI)

Understanding how the solar corona is structured is of fundamental importance to determining how the Sun's upper atmosphere is heated to high temperatures. Recent spectroscopic studies have suggested that an instrument with a spatial resolution of 200km or better is necessary to resolve coronal loops. The High Resolution Coronal Imager (Hi-C) achieved this performance on a rocket flight in July 2012. We use Hi-C data to measure the Gaussian widths of 91 loops observed in the solar corona and find a distribution that peaks at about 270km. We also use Atmospheric Imaging Assembly (AIA) data for a subset of 79 of these loops and find that their temperature distributions are narrow. These observations provide further evidence that loops in the solar corona are structured at a scale of several hundred kilometers, well above the spatial scale of proposed physical mechanisms.

Brooks, David H; Ugarte-Urra, Ignacio; Winebarger, Amy R

2013-01-01T23:59:59.000Z

235

Loop Current Response to Hurricanes Isidore and Lili  

Science Conference Proceedings (OSTI)

Recent hurricane activity over the Gulf of Mexico basin has underscored the importance of the Loop Current (LC) and its deep, warm thermal structure on hurricane intensity. During Hurricanes Isidore and Lili in 2002, research flights were ...

Lynn K. Shay; Eric W. Uhlhorn

2008-09-01T23:59:59.000Z

236

Sodium Plugging Test Loop - Nuclear Engineering Division (Argonne)  

NLE Websites -- All DOE Office Websites (Extended Search)

Sodium Plugging Test Loop Sodium Plugging Test Loop Sodium Plugging Test Loop Overview Other Facilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Sodium Plugging Test Loop This experimental setup is part of the Global Nuclear Energy Partnership (GNEP) Advanced Fuel Cycle R&D work carried out at Argonne on advanced sodium component technology. Bookmark and Share For long range sodium technology research and development, employing supercritical CO2 Brayton cycle power conversion technology as an advanced balance of plant technology is being considered. The component that provides the interface between the sodium and supercritical CO2 is a compact heat exchanger known as a printed circuit heat exchanger (PCHE). This heat exchanger has very small coolant flow passages that may foul or

237

Coal Direct Chemical Looping Retrofit for Pulverized Coal-Fired...  

NLE Websites -- All DOE Office Websites (Extended Search)

Coal Direct Chemical Looping Retrofit for Pulverized Coal-Fired Power Plants with In-Situ CO 2 Capture Background Pulverized coal (PC)-fired power plants provide nearly 50% of...

238

The search for the phonological store: From loop to convolution  

Science Conference Proceedings (OSTI)

The phonological loop system of Baddeley and colleagues' Working Memory model is a major accomplishment of the modern era of cognitive psychology. It was one of the first information processing models to make an explicit attempt to accommodate both traditional ...

Bradley R. Buchsbaum; Mark D'Esposito

2008-05-01T23:59:59.000Z

239

A Numerical Study of Loop Current Intrusions and Eddy Shedding  

Science Conference Proceedings (OSTI)

The dynamics of the eddy shedding by the Loop Current in the Gulf of Mexico have been investigated using three nonlinear numerical models: two-layer, barotropic and reduced gravity. The barotropic and reduced gravity models demonstrate the ...

H. E. Hurlburt; J. Dana Thompson

1980-10-01T23:59:59.000Z

240

N >= 4 Supergravity Amplitudes from Gauge Theory at Two Loops  

SciTech Connect

We present the full two-loop four-graviton amplitudes in N = 4, 5, 6 supergravity. These results were obtained using the double-copy structure of gravity, which follows from the recently conjectured color-kinematics duality in gauge theory. The two-loop four-gluon scattering amplitudes in N = 0, 1, 2 supersymmetric gauge theory are a second essential ingredient. The gravity amplitudes have the expected infrared behavior: the two-loop divergences are given in terms of the squares of the corresponding one-loop amplitudes. The finite remainders are presented in a compact form. The finite remainder for N = 8 supergravity is also presented, in a form that utilizes a pure function with a very simple symbol.

Boucher-Veronneau, C.; Dixon, L.J.; /SLAC

2012-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Geometry of loop quantum gravity on a graph  

SciTech Connect

We discuss the meaning of geometrical constructions associated to loop quantum gravity states on a graph. In particular, we discuss the 'twisted geometries' and derive a simple relation between these and Regge geometries.

Rovelli, Carlo; Speziale, Simone [Centre de Physique Theorique, CNRS-Luminy Case 907, 13288 Marseille Cedex 09 (France)

2010-08-15T23:59:59.000Z

242

Corrosion of alloy 718 in a mercury thermal convection loop  

SciTech Connect

Two thermal convection loops (TCLs) fabricated from annealed alloy 718 continuously circulated mercury (Hg) with 1000 wppm gallium (Ga), respectively, for about 5000 h, duplicating previous TCL tests for annealed 316L. In each case, the maximum loop temperature was 305C, the minimum temperature was 242C, and the Hg flow rate was approximately 1.2 m/min. Unlike the 316L exposed to Hg, which above about 260C exhibited a thin, porous surface layer depleted in Ni and Cr, the alloy 718 coupons revealed essentially no wetting and, therefore, no interaction with that Hg at any temperature. Alloy 718 coupons suspended in the loops revealed inconsequentially small weight changes, and both the coupons and loop tubing exhibited no detectable metallographic evidence of attack.

Pawel, S.J.; DiStefano, J.R.; Manneschmidt, E.T.

1999-12-01T23:59:59.000Z

243

Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process  

This patent-pending technology, Regenerable Mixed Copper-Iron-Inert Support Oxygen Carriers for Solid Fuel Chemical Looping Combustion Process, provides a metal-oxide oxygen carrier for application in fuel combustion processes that use oxygen.

244

Klystron "efficiency loop" for the ALS storage ring RF system  

E-Print Network (OSTI)

EFFICIENCY LOOP FOR THE ALS STORAGE RING RF SYSTEM* S.at the Advanced Light Source (ALS) in order to decrease thethe cavities. 1 INTRODUCTION ALS Storage Ring RF system is

Kwiatkowski, Slawomir; Julian, Jim; Baptiste, Kenneth

2002-01-01T23:59:59.000Z

245

Topological interactions between ring polymers: Implications for chromatin loops  

E-Print Network (OSTI)

Chromatin looping is a major epigenetic regulatory mechanism in higher eukaryotes. Besides its role in transcriptional regulation, chromatin loops have been proposed to play a pivotal role in the segregation of entire chromosomes. The detailed topological and entropic forces between loops still remain elusive. Here, we quantitatively determine the potential of mean force between the centers of mass of two ring polymers, i.e. loops. We find that the transition from a linear to a ring polymer induces a strong increase in the entropic repulsion between these two polymers. On top, topological interactions such as the non-catenation constraint further reduce the number of accessible conformations of close-by ring polymers by about 50%, resulting in an additional effective repulsion. Furthermore, the transition from linear to ring polymers displays changes in the conformational and structural properties of the system. In fact, ring polymers adopt a markedly more ordered and aligned state than linear ones. The force...

Bohn, Manfred

2010-01-01T23:59:59.000Z

246

A Trigger Mechanism for Loop Current Ring Separations  

Science Conference Proceedings (OSTI)

The Loop Current in the Gulf of Mexico sheds large anticyclonic rings on an irregular basis. The authors attempt to show what actually triggers the ring separations. Pulses of increased transport through the Florida Straits, as observed by the ...

Wilton Sturges; Nicholas G. Hoffmann; Robert R. Leben

2010-05-01T23:59:59.000Z

247

Investigations of tetraspanin functions using large extracellular loops  

E-Print Network (OSTI)

This thesis describes our characterization of a specific tetraspanin domain: the large extracellular loop (LEL). Tetraspanins are involved in cellular migration, adhesion, and metastasis, sperm-egg fusion, and viral ...

Liu, Christopher C

2005-01-01T23:59:59.000Z

248

Building Energy Software Tools Directory: Ground Loop Design  

NLE Websites -- All DOE Office Websites (Extended Search)

Ground Loop Design Ground Loop Design Ground Loop Design logo Ground Loop Design is a versatile ground source heat pump system design program that helps the trained geothermal HVAC designer/engineer size equipment, determine the correct lengths of bore or pipe required for commercial projects, optimize the piping configuration for balanced flow and optimal heat transfer, and calculate the annual and lifetime energy/operating/emissions costs associated with the design. The modular program enhances design productivity and permits flexibility in the designing process and customization based on designer preferences. It also has an English/metric conversion engine and is available in many languages, providing applicability to the widest range of equipment and customers. Screen Shots

249

Loop Current Eddy Paths in the Western Gulf of Mexico  

Science Conference Proceedings (OSTI)

The paths of anticyclonic Loop Current eddies in the western Gulf of Mexico have been investigated using ARGOS-tracked drifters accompanied by hydrographic surveys. The analysis used orbit parameters derived from a least square fit of a ...

Peter Hamilton; G. S. Fargion; D. C. Biggs

1999-06-01T23:59:59.000Z

250

Snowmass Benchmark Points and Three-Loop Running  

E-Print Network (OSTI)

We present the full three-loop beta-functions for the MSSM generalised to include additional matter multiplets in 5, 10 representations of SU(5). We analyse in detail the effect of three-loop running on the sparticle spectrum for the MSSM Snowmass Benchmark Points. We also consider the effect on these spectra of additional matter multiplets (the semi-perturbative unification scenario).

I. Jack; D. R. T. Jones; A. F. Kord

2004-08-10T23:59:59.000Z

251

Water-Loop Heat Pump Systems: Assessment Study Update  

Science Conference Proceedings (OSTI)

Water-loop heat pump systems, composed of multiple water-source heat pumps, a boiler, and a cooling tower operating in a closed water loop are a key segment of the commercial building heat pump market. This type of system provides a low-first-cost, versatile, and energy-efficient approach to space conditioning commercial buildings that have simultaneous heating and cooling loads.

1991-10-25T23:59:59.000Z

252

On the Rational Terms of the one-loop amplitudes  

E-Print Network (OSTI)

The various sources of Rational Terms contributing to the one-loop amplitudes are critically discussed. We show that the terms originating from the generic (n-4)-dimensional structure of the numerator of the one-loop amplitude can be derived by using appropriate Feynman rules within a tree-like computation. For the terms that originate from the reduction of the 4-dimensional part of the numerator, we present two different strategies and explicit algorithms to compute them.

Giovanni Ossola; Costas G. Papadopoulos; Roberto Pittau

2008-02-13T23:59:59.000Z

253

HEATING OF FLARE LOOPS WITH OBSERVATIONALLY CONSTRAINED HEATING FUNCTIONS  

SciTech Connect

We analyze high-cadence high-resolution observations of a C3.2 flare obtained by AIA/SDO on 2010 August 1. The flare is a long-duration event with soft X-ray and EUV radiation lasting for over 4 hr. Analysis suggests that magnetic reconnection and formation of new loops continue for more than 2 hr. Furthermore, the UV 1600 Angstrom-Sign observations show that each of the individual pixels at the feet of flare loops is brightened instantaneously with a timescale of a few minutes, and decays over a much longer timescale of more than 30 minutes. We use these spatially resolved UV light curves during the rise phase to construct empirical heating functions for individual flare loops, and model heating of coronal plasmas in these loops. The total coronal radiation of these flare loops are compared with soft X-ray and EUV radiation fluxes measured by GOES and AIA. This study presents a method to observationally infer heating functions in numerous flare loops that are formed and heated sequentially by reconnection throughout the flare, and provides a very useful constraint to coronal heating models.

Qiu Jiong; Liu Wenjuan; Longcope, Dana W. [Department of Physics, Montana State University, Bozeman, MT 59717-3840 (United States)

2012-06-20T23:59:59.000Z

254

2F and 2H evaporator loop evaluation closure report  

SciTech Connect

As a result of the Concentrate Transfer System (CTS) tank ventilation system contamination event, a task team was formed to evaluate instrument loops associated with waste reduction equipment. During the event a conductivity probe designed to provide an alarm and initiate an interlock failed to respond to the presence of liquid. An investigation revealed that the probe had become disconnected from the loop. The daily functional check of the conductivity probe circuit only tested the circuit continuity from the ventilation unit to the control room and did not actually test the probe. To test the continuity, a test switch was used to simulate the conducting probe. Because the functional check did not test each part of the loop, the test could be satisfactorily completed even though the probe itself was inoperable. The function of the task team was to develop a list of loops and interlocks prioritized by importance and likelihood of similar failure. The team evaluated the associated loop calibration and functional test procedures to verify that they are adequate to ensure loop performance on a periodic frequency. This report documents the evaluation findings and associated actions required prior to startup of the 2F and 2H evaporators.

Bates, W.F.

1994-01-28T23:59:59.000Z

255

Triple loop heat exchanger for an absorption refrigeration system  

DOE Patents (OSTI)

A triple loop heat exchanger for an absorption refrigeration system is disclosed. The triple loop heat exchanger comprises portions of a strong solution line for conducting relatively hot, strong solution from a generator to a solution heat exchanger of the absorption refrigeration system, conduit means for conducting relatively cool, weak solution from the solution heat exchanger to the generator, and a bypass system for conducting strong solution from the generator around the strong solution line and around the solution heat exchanger to an absorber of the refrigeration system when strong solution builds up in the generator to an undesirable level. The strong solution line and the conduit means are in heat exchange relationship with each other in the triple loop heat exchanger so that, during normal operation of the refrigeration system, heat is exchanged between the relatively hot, strong solution flowing through the strong solution line and the relatively cool, weak solution flowing through the conduit means. Also, the strong solution line and the bypass system are in heat exchange relationship in the triple loop heat exchanger so that if the normal flow path of relatively hot, strong solution flowing from the generator to an absorber is blocked, then this relatively, hot strong solution which will then be flowing through the bypass system in the triple loop heat exchanger, is brought into heat exchange relationship with any strong solution which may have solidified in the strong solution line in the triple loop heat exchanger to thereby aid in desolidifying any such solidified strong solution.

Reimann, Robert C. (Lafayette, NY)

1984-01-01T23:59:59.000Z

256

Enhanced Classifications of Engineered Paved Surfaces for Urban Systems Modeling  

Science Conference Proceedings (OSTI)

There is a greater need than ever for the ability to accurately model urban system impacts resulting around the planet. Rapid urbanization is transforming landscapes from vegetation to an engineered infrastructure and thus altering land cover and ...

Jay Golden; W. C. Chuang; W. L. Stefanov

2009-06-01T23:59:59.000Z

257

A CFD Model for Simulating Urban Flow and Dispersion  

Science Conference Proceedings (OSTI)

A three-dimensional computational fluid dynamics (CFD) model is developed to simulate urban flow and dispersion, to understand fluid dynamical processes therein, and to provide practical solutions to some emerging problems of urban air pollution. ...

Jong-Jin Baik; Jae-Jin Kim; Harindra J. S. Fernando

2003-11-01T23:59:59.000Z

258

Transportation planning for mega events : a model of urban change  

E-Print Network (OSTI)

My study is about opportunities for revolutionary developments in urban transport. Often, we think of transport and urban development as an evolutionary process, yet there exist a few opportunities for cities to revolutionize ...

Kassens, Eva

2009-01-01T23:59:59.000Z

259

Estimating Urban Temperature Bias Using Polar-Orbiting Satellite Data  

Science Conference Proceedings (OSTI)

Urban temperature bias, defined to be the difference between a shelter temperature reading of unknown but suspected urban influence and some appropriate rural reference temperature, is estimated through the use of polar-orbiting satellite data. ...

Gregory L. Johnson; Jerry M. Davis; Thomas R. Karl; Alan L. McNab; Kevin P. Gallo; J. Dan Tarpley; Peter R. Bloomfield

1994-03-01T23:59:59.000Z

260

Improving Building Performance at Urban Scale with a Framework...  

NLE Websites -- All DOE Office Websites (Extended Search)

Improving Building Performance at Urban Scale with a Framework for Real-time Data Sharing Title Improving Building Performance at Urban Scale with a Framework for Real-time Data...

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Modernity of Chinese urban neighborhoods : toward new spatial forms  

E-Print Network (OSTI)

There is always a general dilemma about how to balance technology and humanity in urban neighborhood development. Modem technology creates many new spatial forms for Chinese urban neighborhoods, but it also destroys many ...

Yi, Qian, 1973-

2002-01-01T23:59:59.000Z

262

Stadium development and urban renewal : a look at Washington, DC  

E-Print Network (OSTI)

This thesis investigates the factors, related to urban stadium development, that act as a catalyst for subsequent local urban renewal. Over the recent decades there has been substantial debate related to stadium or arena ...

Rizzo, James W. (James Watson)

2008-01-01T23:59:59.000Z

263

Architecture of the rail : exploring the potential of urban infrastructure  

E-Print Network (OSTI)

This thesis is the pursuit of a sensitivity for the relationship between urban infrastructure and architectural form, an attempt to restore a quality of "publicness" in the urban landscape through the implementation of a ...

Iboshi, Gregory Kenji

1994-01-01T23:59:59.000Z

264

Approximate translation : media, narrative, and experience in urban design  

E-Print Network (OSTI)

Approximate translation is developed as a design process through which the place-embedded history of an urban environment can be understood, allowing for better design and intervention in that urban environment. Generally, ...

Crisman, Jonathan

2013-01-01T23:59:59.000Z

265

Exploding the edge : inversions into the urban landscape  

E-Print Network (OSTI)

This thesis explores the relationship between building and green space in a dense urban environment in order to create a humane contemplative experience of individual and collective memory. The urban environment has the ...

Chia, Katherine Kai-sun

1991-01-01T23:59:59.000Z

266

Studies of Urban Climates and Air Pollution in Switzerland  

Science Conference Proceedings (OSTI)

In addition to an assessment of the factors that are responsible for urban climate change, this paper describes climatological studies and peculiarities of some Swiss cities. Although these cities are small, urban air pollution presents a real ...

Heinz Wanner; Jacques-Andr Hertig

1984-12-01T23:59:59.000Z

267

Camera for the invisible : toward a toolkit for urban exploration  

E-Print Network (OSTI)

We are disconnected from our environment. We can't reconnect because we can't even see the Nature within our urban surroundings. Inspired by urban explorers and Nature Awareness traditions, I will develop methodologies and ...

Silver, Jay (Jay S.)

2008-01-01T23:59:59.000Z

268

Urban Search and Rescue Robots Information at NIST  

Science Conference Proceedings (OSTI)

... Unmanned Vehicle Systems Tech Transfer Forum (10 ... of Homeland Security Urban Search and Rescue ... Science and Technology Directorate (DHS ...

2010-05-24T23:59:59.000Z

269

Swarm Intelligence for Urban Dynamics Modelling  

Science Conference Proceedings (OSTI)

In this paper, we propose swarm intelligence algorithms to deal with dynamical and spatial organization emergence. The goal is to model and simulate the developement of spatial centers using multi-criteria. We combine a decentralized approach based on emergent clustering mixed with spatial constraints or attractions. We propose an extension of the ant nest building algorithm with multi-center and adaptive process. Typically, this model is suitable to analyse and simulate urban dynamics like gentrification or the dynamics of the cultural equipment in urban area.

Ghnemat, Rawan; Bertelle, Cyrille [LITIS-University of Le Havre 25 rue Philippe Lebon-BP 540 76058 Le Havre cedex (France); Duchamp, Gerard H. E. [LIPN-University of Paris XIII 99 avenue Jean-Baptiste Clement 93430 Villetaneuse (France)

2009-04-16T23:59:59.000Z

270

Synthesizing Transformations for Locality Enhancement of Imperfectly-Nested Loop Nests  

Science Conference Proceedings (OSTI)

Linear loop transformations and tiling are known to be very effective for enhancing locality of reference in perfectly-nested loops. However, they cannot be applied directly to imperfectly-nested loops. Some compilers attempt to convert imperfectly-nested ... Keywords: automatic locality enhancement, caches, imperfectly-nested loops, program transformation, restructuring compilers

Nawaaz Ahmed; Nikolay Mateev; Keshav Pingali

2001-10-01T23:59:59.000Z

271

Design and analysis of a second order phase locked loops (PLLs)  

Science Conference Proceedings (OSTI)

This work concerns with the design and analysis of phase locked loops (PLLs). In the last decade a lot of works have been done about the analysis of PLLs. The phase locked loops are analyzed briefly, second order, third order, and fourth order. In practically ... Keywords: charge pump PLL (CPPPL), loop filter (LF), phase locked loop (PLL)

Diary R. Sulaiman

2006-05-01T23:59:59.000Z

272

Micro-Columnated Loop Heat Pipe: The Future of Electronic Substrates  

E-Print Network (OSTI)

Loop Heat Pipes . . . . . . . . . . . . . . . . . . . .Heat Pipes . . . . . . . . . . . . . . . . . . . . . . . .of operation of a heat pipe [13]. . . . . . . . . . . . . .

Dhillon, Navdeep Singh

2012-01-01T23:59:59.000Z

273

Loop Current, Rings and Related Circulation in the Gulf of Mexico: A Review of Numerical  

E-Print Network (OSTI)

3 Loop Current, Rings and Related Circulation in the Gulf of Mexico: A Review of Numerical Models of the most energetic components of the circulation in the Gulf of Mexico: the Loop Current and Loop Current the observable features of the Loop Current and rings." The Gulf of Mexico is a semi-enclosed sea that con- nects

Ezer,Tal

274

An exercise in forecasting loop current and eddy frontal positions in the Gulf of Mexico  

E-Print Network (OSTI)

An exercise in forecasting loop current and eddy frontal positions in the Gulf of Mexico L.-Y. Oey to forecast Loop Current and Loop Current eddy frontal positions in the Gulf of Mexico, the Princeton Regional (2005), An exercise in forecasting loop current and eddy frontal positions in the Gulf of Mexico

275

Turbulent Heat Fluxes in Urban Areas: Observations and a Local-Scale Urban Meteorological Parameterization Scheme (LUMPS)  

Science Conference Proceedings (OSTI)

A linked set of simple equations specifically designed to calculate heat fluxes for the urban environment is presented. This local-scale urban meteorological parameterization scheme (LUMPS), which has similarities to the hybrid plume dispersion ...

C. S. B. Grimmond; T. R. Oke

2002-07-01T23:59:59.000Z

276

Urban Modification of Thunderstorms: An Observational Storm Climatology and Model Case Study for the Indianapolis Urban Region  

Science Conference Proceedings (OSTI)

A radar-based climatology of 91 unique summertime (May 2000August 2009) thunderstorm cases was examined over the Indianapolis, Indiana, urban area. The study hypothesis is that urban regions alter the intensity and composition/structure of ...

Dev Niyogi; Patrick Pyle; Ming Lei; S. Pal Arya; Chandra M. Kishtawal; Marshall Shepherd; Fei Chen; Brian Wolfe

2011-05-01T23:59:59.000Z

277

Numerical Study of Urban Impact on Boundary Layer Structure: Sensitivity to Wind Speed, Urban Morphology, and Rural Soil Moisture  

Science Conference Proceedings (OSTI)

A mesoscale model with a detailed urban surface exchange parameterization is used to study urban influences on boundary layer structure. The parameterization takes into account thermal and mechanical factors, and it is able to reproduce the most ...

Alberto Martilli

2002-12-01T23:59:59.000Z

278

Estimation of Climate-Change Impacts on the Urban Heat Load Using an Urban Climate Model and Regional Climate Projections  

Science Conference Proceedings (OSTI)

A pragmatic approach to estimate the impact of climate change on the urban environment, here called the cuboid method, is presented. This method allows one to simulate the urban heat load and the frequency of air temperature threshold exceedances ...

Barbara Frh; Paul Becker; Thomas Deutschlnder; Johann-Dirk Hessel; Meinolf Kossmann; Ingrid Mieskes; Joachim Namyslo; Marita Roos; Uwe Sievers; Thomas Steigerwald; Heidelore Turau; Uwe Wienert

2011-01-01T23:59:59.000Z

279

Sustainable Urbanism : an examination of environmentally responsible neighborhood developments in Europe and lessons for sustainable urban planning  

E-Print Network (OSTI)

The emergence of the sustainable development concept at the end of the 1980s triggered the intensification of the environmental sustainability discourse in urban design and planning. The vision of sustainable urbanism ...

Kasioumi, Eirini

2010-01-01T23:59:59.000Z

280

Urban Consortium Energy Task Force - Year 21 Final Report  

Science Conference Proceedings (OSTI)

The Urban Consortium Energy Task Force (UCETF), comprised of representatives of large cities and counties in the United States, is a subgroup of the Urban Consortium, an organization of the nation's largest cities and counties joined together to identify, develop and deploy innovative approaches and technological solutions to pressing urban issues.

NONE

2003-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

A flexible IT infrastructure for integrated urban planning  

Science Conference Proceedings (OSTI)

This paper presents an IT infrastructure based on an event driven architecture with the objective to decrease the turnaround time for urban planning. Most urban planning takes a long time, not only to get all stakeholders involved, but also to assess ... Keywords: Urban planning, event driven architecture, flexibility, infrastructure, interoperability

Wout Hofman; Walter Lohman; Ab Schelling

2011-04-01T23:59:59.000Z

282

Complex Adaptive Systems Simulation-Optimization Framework for Adaptive Urban Water Resources Management  

E-Print Network (OSTI)

Population growth, urbanization and climate change threaten urban water systems. The rise of demands caused by growing urban areas and the potential decrease of water availability caused by the increase of frequency and severity of droughts challenge the continued well-being of society. Due to increasing environmental and financial constraints, water management paradigms have shifted from supply augmentation to demand management, and water conservation initiatives may efficiently decrease water demands to more sustainable levels. To provide reliable assessment of the efficiencies of different demand management strategies, new modeling techniques are needed that can simulate decentralized decisions of consumers and their interactions with the water system. An integrated simulation-optimization framework, based on the paradigm of Complex Adaptive Systems, is developed here to model dynamic interactions and adaptations within social, built, and natural components of urban water systems. The framework goes beyond tradition engineering simulations by incorporating decentralized, heterogeneous and autonomous agents, and by simulating dynamic feedback loops among modeling components. The framework uses modeling techniques including System Dynamics, Cellular Automata, and Agent-based Modeling to simulate housing and population growth, a land use change, residential water consumption, the hydrologic cycle, reservoir operation, and a policy/decision maker. This research demonstrates the applicability of the proposed framework through a series of studies applied to a water supply system of a large metropolitan region that is located in a semi-arid region and suffers recurrently from severe droughts. A set of adaptive demand management strategies, that apply contingency restrictions, land use planning, and water conservation technologies, such as rainwater harvesting systems, are evaluated. A multi-objective Evolutionary Algorithm is coupled with the CAS simulation framework to identify optimal strategies and explore conflicting objectives within a water system. The results demonstrate the benefits of adaptive management by updating management decisions to changing conditions. This research develops a new hydrologic sustainability metric, developed to quantify the stormwater impacts of urbanization. The Hydrologic Footprint Residence captures temporal and spatial hydrologic characteristics of a flood wave passing through a stream segment and is used to assess stormwater management scenarios, including Best Management Practices and Low Impact Development.

Giacomoni, Marcio

2012-08-01T23:59:59.000Z

283

CHEVROLET S-10 ELECTRIC  

NLE Websites -- All DOE Office Websites (Extended Search)

January - February 2000 January - February 2000 Date Prepared: 3/24/2000 1997 GM EV1 (PANASONIC PB-A BATTERIES) PERFORMANCE CHARACTERIZATION SUMMARY ELECTRIC TRANSPORTATION DIVISION Urban Range (On Urban Pomona Loop - see other side for map) Payload (lb) 90.3 88.9 (mi.) Range Without Aux. loads With Aux. loads Maximum 447 Minimum 185 72.6 79.7 UR1 UR2 UR3 UR4 Test UR1 UR2 UR3 UR4 Payload (lb.) 185 185 447 447 AC kWh Recharge 26.91 26.61 27.69 22.80 AC kWh/mi. 0.296 0.331 0.311 0.312 Range (mi.) 90.3 79.7 88.9 72.6 Avg. Ambient Temp. 65°F 72°F 70°F 71°F UR1 Urban Range Test, Min Payload, No Auxiliary Loads UR2 Urban Range Test, Min Payload, A/C on High, Headlights on Low, Radio On UR3 Urban Range Test, Max Payload, No Auxiliary Loads UR4 Urban Range Test, Max Payload, A/C on High, Headlights on Low, Radio On State of Charge Meter (UR1)

284

Sheet.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

CHRYSLER EPIC (NIMH BATTERIES) PERFORMANCE CHARACTERIZATION SUMMARY CHRYSLER EPIC (NIMH BATTERIES) PERFORMANCE CHARACTERIZATION SUMMARY ELECTRIC TRANSPORTATION DIVISION Urban Range (On Urban Pomona Loop - see other side for map) Range (mi.) Weight (lb.) 160 930 Max. Payload Min. Payload 63.6 82.0 without aux. loads with aux. loads 77.6 67.8 Test UR1 UR2 UR3 UR4 Payload (lb.) 160 160 930 930 AC kWh Recharge 53.91 50.03 53.02 52.61 AC kWh/mi. 0.663 0.734 06.75 0.823 Range (mi.) 82.0 67.8 77.6 63.6 Avg. Ambient Temp. 75º F 80º F 79º F 85º F UR1 Urban Range Test, Min Payload, No Auxiliary Loads UR2 Urban Range Test, Min Payload, A/C on High, Headlights on Low, Radio On UR3 Urban Range Test, Max Payload, No Auxiliary Loads UR4 Urban Range Test, Max Payload, A/C on High, Headlights on Low, Radio On State of Charge Meter (UR1) SOC Meter Reading vs Miles Driven 0 10

285

Scaling the Daytime Urban Heat Island and Urban-Breeze Circulation  

Science Conference Proceedings (OSTI)

The urban-breeze circulation is a mesoscale response of the atmospheric flow that is related to horizontal variations in temperature associated, for dry conditions, with gradients in sensible heat flux densities. This local circulation is ...

Julia Hidalgo; Valry Masson; Luis Gimeno

2010-05-01T23:59:59.000Z

286

Food urbanism : urban agriculture as a strategy to facilitate social mobility in informal settlements  

E-Print Network (OSTI)

Can community-based urban agriculture generate stronger communities? How is this possible? This thesis explores the possibility of community development through application of community gardens in an informal settlement ...

Amirtahmasebi, Rana

2008-01-01T23:59:59.000Z

287

NETL: Alstom's Chemical Looping Combustion Technology with CO2 Capture  

NLE Websites -- All DOE Office Websites (Extended Search)

Alstom's Chemical Looping Combustion Technology with CO2 Capture for New and Existing Coal-Fired Power Plants Alstom's Chemical Looping Combustion Technology with CO2 Capture for New and Existing Coal-Fired Power Plants Project No.: DE-FE0009484 Alstom is advancing the development of Limestone Chemical Looping Combustion (LCL-C(tm)) technology. Chemical looping has no direct contact between air and fuel. The looping process usually utilizes oxygen from a metal carrier, but in this case, limestone is used. Economic evaluations will be made of four LCL-C plant configurations. The base configuration plant has already been completed and will be updated from previous reports. A second case will compare the effects of designing the reducer reactor using CFB sizing standards. A third case will investigate the effects of using a pressurized reducer reactor. Pressurizing the reducer reduces the reactor size and reduces the amount of compression required for the CO2 outlet gas stream. A fourth case will investigate the use of an advanced ultra-supercritical (USC) steam cycle. The advanced USC steam cycle should increase overall plant efficiency and lower the cost of electricity. Mass and energy balances will be done for each case. The four LCL-CTM cases will be compared against a supercritical pulverized coal-fired plant without CO2 capture.

288

Topological interactions between ring polymers: Implications for chromatin loops  

E-Print Network (OSTI)

Chromatin looping is a major epigenetic regulatory mechanism in higher eukaryotes. Besides its role in transcriptional regulation, chromatin loops have been proposed to play a pivotal role in the segregation of entire chromosomes. The detailed topological and entropic forces between loops still remain elusive. Here, we quantitatively determine the potential of mean force between the centers of mass of two ring polymers, i.e. loops. We find that the transition from a linear to a ring polymer induces a strong increase in the entropic repulsion between these two polymers. On top, topological interactions such as the non-catenation constraint further reduce the number of accessible conformations of close-by ring polymers by about 50%, resulting in an additional effective repulsion. Furthermore, the transition from linear to ring polymers displays changes in the conformational and structural properties of the system. In fact, ring polymers adopt a markedly more ordered and aligned state than linear ones. The forces and accompanying changes in shape and alignment between ring polymers suggest an important regulatory function of such a topology in biopolymers. We conjecture that dynamic loop formation in chromatin might act as a versatile control mechanism regulating and maintaining different local states of compaction and order.

Manfred Bohn; Dieter W. Heermann

2010-01-24T23:59:59.000Z

289

Electroweak Constraints on the Fourth Generation at Two Loop Order  

E-Print Network (OSTI)

If the Higgs-like particle at 126 GeV is the standard model Higgs boson, then SM4, the simplest four generation extension of the SM, is inconsistent with the most recent LHC data. However, 4G variations (BSM4) are possible if the new particle is not the SM Higgs boson and/or if other new quanta modify its production and decay rates. Since LHC searches have pushed 4G quarks to high mass and strong coupling where perturbation theory eventually fails, we examine the leading nondecoupling EW (electroweak) corrections at two loop order to estimate the domain of validity for perturbation theory. We find that the two loop hypercharge correction, which has not been included in previous EW fits of 4G models, makes the largest quark sector contribution to the rho parameter, much larger even than the nominally leading one loop term. Because it is large and negative, it has a big effect on the EW fits. It does not invalidate perturbation theory since it only first appears at two loop order and is large because it does not vanish for equal quark doublet masses, unlike the one loop term. We estimate that perturbation theory is useful for $m_Q\\simeq 600$ GeV but begins to become marginal for $m_Q\\, \\gtap\\, 900$ GeV. The results apply directly to BSM4 models that retain the SM Higgs sector but must be re-evaluated for non-SM Higgs sectors.

Michael S. Chanowitz

2012-12-13T23:59:59.000Z

290

Improvement of modelling capabilities for assessing urban contamination : The EMRAS Urban Remediation Working Group.  

SciTech Connect

The Urban Remediation Working Group of the International Atomic Energy Agency's Environmental Modeling for Radiation Safety (EMRAS) programme was established to improve modeling and assessment capabilities for radioactively contaminated urban situations, including the effects of countermeasures. An example of the Working Group's activities is an exercise based on Chernobyl fallout data in Ukraine, which has provided an opportunity to compare predictions among several models and with available measurements, to discuss reasons for discrepancies, and to identify areas where additional information would be helpful.

Thiessen, K. M.; Batandjieva, B.; Andersson, K. G.; Arkhipov, A.; Charnock, T. W.; Gallay, F.; Gaschak, S.; Golikov, V.; Hwang, W. T.; Kaiser, J. C.; Kamboj, S.; Steiner, M.; Tomas, J.; Trifunovic, D.; Yu, C.; Ziemer, R. L.; Zlobenko, B.; Environmental Science Division; SENES Oak Ridge; IAEA; Riso National Lab.; Chernobyl Center for Nuclear Safety; Health Protection Agency; IRSN; Inst. of Radiation Hygene of the Ministry of Public Health, Russian Federation; KAERI, Republic of Korea; GSF, Germany; BfS, Germany; CPHR, Cuba; State Office for Radiation Protection, Croatia; AECL, Canada; National Academy of Science, Ukraine

2008-01-01T23:59:59.000Z

291

Incorporating Urban Systems in Global Climate Models  

E-Print Network (OSTI)

Resolutions IPCC AR4 The Future? Preliminary Data #12;CLM Urban Canyon Model Building Building Solar Radiation properties Building Properties Thermal Conductivity (W/mK) Heat Capacity (MJ/m^3 K) Albedo Density (kg/m^3T ,1shdwlT min , maxi buildT T T

Peterson, Blake R.

292

Detecting urbanization changes using SPOT5  

Science Conference Proceedings (OSTI)

An automatic system to estimate the urbanization changes on the Belgian territory, using SPOT5 images and the National Geographic Institute vectorial database is proposed. The images and the vectorial data are first co-registered. Then, the vectorial ... Keywords: Built-up area detection, Cartography, Change detection, SPOT5

V. Lacroix; M. Idrissa; A. Hincq; H. Bruynseels; O. Swartenbroekx

2006-03-01T23:59:59.000Z

293

S. Sabina Wolfson Urban Transportation Planning  

E-Print Network (OSTI)

official support for (or recognition of) BRT. New York City's "vision" for the future of transportationS. Sabina Wolfson Urban Transportation Planning Term paper Bus Rapid Transit on the East Side of Manhattan The East Side of Manhattan needs more (and better) public transportation1. Eventually a Second

Wolfson, Sabina

294

Robust video communication over an urban VANET  

Science Conference Proceedings (OSTI)

Video communication within a Vehicular Ad Hoc Network (VANET) has the potential to be of considerable benefit in an urban emergency, as it allows emergency vehicles approaching the scene to better understand the nature of the emergency. However, the ... Keywords: Error resilience, IEEE 802.11p, VANET, multiple path delivery, redundant frames, video communication

N. Qadri; M. Altaf; M. Fleury; M. Ghanbari

2010-08-01T23:59:59.000Z

295

South Africa-Promoting Low Emission Urban Development Strategies in  

Open Energy Info (EERE)

South Africa-Promoting Low Emission Urban Development Strategies in South Africa-Promoting Low Emission Urban Development Strategies in Emerging Economy Countries (URBAN-LEDS) Jump to: navigation, search Name South Africa-Promoting Low Emission Urban Development Strategies in Emerging Economy Countries (URBAN-LEDS) Agency/Company /Organization ICLEI - Local Governments for Sustainability, European Commission, UN Habitat Sector Climate, Energy Focus Area Renewable Energy, Buildings, Buildings - Commercial, Buildings - Residential, People and Policy Topics Adaptation, Background analysis, Baseline projection, Low emission development planning, -LEDS, Market analysis, Pathways analysis, Policies/deployment programs Website http://www.iclei.org/fileadmin Program Start 2012 Program End 2015 Country South Africa Southern Africa

296

Sustainable Urban Development Priorities - Development of a Rapid  

Open Energy Info (EERE)

Sustainable Urban Development Priorities - Development of a Rapid Sustainable Urban Development Priorities - Development of a Rapid Assessment Tool for Urban Mobility in Cities with Data Scarcity Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Sustainable Urban Development Priorities - Development of a Rapid Assessment Tool for Urban Mobility in Cities with Data Scarcity Agency/Company /Organization: Clean Air Asia, The Institute for Transportation and Development Policy (ITDP) Partner: UN Habitat Sector: Land Focus Area: Greenhouse Gas, People and Policy, Transportation Topics: Background analysis, Baseline projection, Co-benefits assessment, - Environmental and Biodiversity, GHG inventory, Low emission development planning, -LEDS, Policies/deployment programs Website: cleanairinitiative.org/portal/node/7870

297

Energy Savings Calculator for Commercial Boilers: Closed Loop, Space  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Savings Calculator for Commercial Boilers: Closed Loop, Savings Calculator for Commercial Boilers: Closed Loop, Space Heating Applications Only Energy Savings Calculator for Commercial Boilers: Closed Loop, Space Heating Applications Only October 8, 2013 - 2:23pm Addthis This cost calculator is a screening tool that estimates a product's lifetime energy cost savings at various efficiency levels. Learn more about the base model and other assumptions. Project Type Is this a new installation or a replacement? New Replacement What is the deliverable fluid type? Water Steam What fuel is used? Gas Oil How many boilers will you purchase? unit(s) Performance Factors Existing What is the capacity of the existing boiler? MBtu/hr* What is the thermal efficiency of the existing boiler? % Et New What is the capacity of the new boiler?

298

Belgium east loop active network management (Smart Grid Project) | Open  

Open Energy Info (EERE)

Belgium east loop active network management (Smart Grid Project) Belgium east loop active network management (Smart Grid Project) Jump to: navigation, search Project Name Belgium east loop active network management Country Belgium Coordinates 50.148746°, 4.086914° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":50.148746,"lon":4.086914,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

299

Quasi-Local Energy in Loop Quantum Gravity  

E-Print Network (OSTI)

Although there is no known meaningful notion of the energy density of the gravitational field in general relativity, a few notions of quasi-local energy of gravity associated to extended but finite domains have been proposed. In this paper, the notions of quasi-local energy are studied in the framework of loop quantum gravity, in order to see whether these notions can be carried out at quantum level. Two basic quasi-local geometric quantities are quantized, which lead to well-defined operators in the kinematical Hilbert space of loop quantum gravity. We then use them as basic building blocks to construct different versions of quasi-local energy operators. The operators corresponding to Brown-York energy, Liu-Yau energy, Hawking energy, and Geroch energy are obtained respectively. The virtue of the Geroch energy operator is beneficial for us to derive a rather general entropy-area relation and thus a holographic principle from loop quantum gravity.

Jinsong Yang; Yongge Ma

2008-12-18T23:59:59.000Z

300

Quasi-Local Energy in Loop Quantum Gravity  

E-Print Network (OSTI)

Although there is no known meaningful notion of the energy density of the gravitational field in general relativity, a few notions of quasi-local energy of gravity associated to extended but finite domains have been proposed. In this paper, the notions of quasi-local energy are studied in the framework of loop quantum gravity, in order to see whether these notions can be carried out at quantum level. Two basic quasi-local geometric quantities are quantized, which lead to well-defined operators in the kinematical Hilbert space of loop quantum gravity. We then use them as basic building blocks to construct different versions of quasi-local energy operators. The operators corresponding to Brown-York energy, Liu-Yau energy, Hawking energy, and Geroch energy are obtained respectively. The virtue of the Geroch energy operator is beneficial for us to derive a rather general entropy-area relation from loop quantum gravity.

Yang, Jinsong

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Multi-loop Feynman integrals and conformal quantum mechanics  

E-Print Network (OSTI)

New algebraic approach to analytical calculations of D-dimensional integrals for multi-loop Feynman diagrams is proposed. We show that the known analytical methods of evaluation of multi-loop Feynman integrals, such as integration by parts and star-triangle relation methods, can be drastically simplified by using this algebraic approach. To demonstrate the advantages of the algebraic method of analytical evaluation of multi-loop Feynman diagrams, we calculate ladder diagrams for the massless $\\phi^3$ theory. Using our algebraic approach we show that the problem of evaluation of special classes of Feynman diagrams reduces to the calculation of the Green functions for specific quantum mechanical problems. In particular, the integrals for ladder massless diagrams in the $\\phi^3$ scalar field theory are given by the Green function for the conformal quantum mechanics.

A. P. Isaev

2003-03-06T23:59:59.000Z

302

Novel Reactor Design for Solid Fuel Chemical Looping Combustion  

NLE Websites -- All DOE Office Websites (Extended Search)

Novel Reactor Design for Solid Fuel Novel Reactor Design for Solid Fuel Chemical Looping Combustion Opportunity Research is active on the patent pending technology, titled "Apparatus and Method for Solid Fuel Chemical Looping Combustion." This technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory. Overview The removal of CO2 from power plants is challenging because existing methods to separate CO2 from the gas mixture requires a significant fraction of the power plant output. Chemical-looping combustion (CLC) is a novel technology that utilizes a metal oxide oxygen carrier to transport oxygen to the fuel thereby avoiding direct contact between fuel and air. The use of CLC has the advantages of reducing the energy penalty while

303

Promoting Low Emission Urban Development Strategies in Emerging Economy  

Open Energy Info (EERE)

Promoting Low Emission Urban Development Strategies in Emerging Economy Promoting Low Emission Urban Development Strategies in Emerging Economy Countries Project (URBAN LEDS) Jump to: navigation, search Name Promoting Low Emission Urban Development Strategies in Emerging Economy Countries Project (URBAN LEDS) Agency/Company /Organization ICLEI - Local Governments for Sustainability Sector Climate, Energy Focus Area Renewable Energy, Energy Efficiency Topics Low emission development planning Resource Type Lessons learned/best practices, Training materials Website http://www.iclei.org/ References ICLEI - Local Governments for Sustainability[1] ICLEI acts as the implementing partner of UN-HABITAT in the "Promoting Low Emission Urban Development Strategies in Emerging Economy Countries Project (URBAN LEDS)", that is funded by the European Commission and launched on 9

304

From Classical To Quantum Gravity: Introduction to Loop Quantum Gravity  

E-Print Network (OSTI)

We present an introduction to the canonical quantization of gravity performed in loop quantum gravity, based on lectures held at the 3rd quantum geometry and quantum gravity school in Zakopane in 2011. A special feature of this introduction is the inclusion of new proposals for coupling matter to gravity that can be used to deparametrize the theory, thus making its dynamics more tractable. The classical and quantum aspects of these new proposals are explained alongside the standard quantization of vacuum general relativity in loop quantum gravity.

Giesel, Kristina

2012-01-01T23:59:59.000Z

305

Gravity quantized: Loop quantum gravity with a scalar field  

Science Conference Proceedings (OSTI)

...''but we do not have quantum gravity.'' This phrase is often used when analysis of a physical problem enters the regime in which quantum gravity effects should be taken into account. In fact, there are several models of the gravitational field coupled to (scalar) fields for which the quantization procedure can be completed using loop quantum gravity techniques. The model we present in this paper consists of the gravitational field coupled to a scalar field. The result has similar structure to the loop quantum cosmology models, except that it involves all the local degrees of freedom of the gravitational field because no symmetry reduction has been performed at the classical level.

Domagala, Marcin; Kaminski, Wojciech [Instytut Fizyki Teoretycznej, Uniwersytet Warszawski, ul. Hoza 69, 00-681 Warszawa (Warsaw), Polska (Poland) (Poland); Giesel, Kristina [Excellence Cluster Universe, Technische Universitaet Muenchen, Boltzmannstrasse 2, 85748 Garching (Germany); Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803 (United States); Lewandowski, Jerzy [Instytut Fizyki Teoretycznej, Uniwersytet Warszawski, ul. Hoza 69, 00-681 Warszawa (Warsaw), Polska (Poland) (Poland); Institute for Gravitation and the Cosmos, Physics Department, Penn State, University Park, Pennsylvania 16802 (United States)

2010-11-15T23:59:59.000Z

306

Severe accident sequences analyzed for a two-loop PWR  

Science Conference Proceedings (OSTI)

Different severe accident sequences have been analyzed for a two-loop Westinghouse pressurized water reactor (PWR) using the MELCOR code, version 1.8.4. The purpose of this study was to calculate source terms and the timing of events for severe accident sequences at this type of PWR to be used in the HAS-CAL code .The results calculated by MELCOR have been compared to results from the individual plant examination (IPE) of the Kewaunee nuclear power plant, also a two-loop Westinghouse PWR. The results of the Kewaunee IPE were obtained with the severe accident code MAAP.

Carbajo, J.J. [Oak Ridge National Lab., TN (United States)

1997-12-01T23:59:59.000Z

307

Dilaton Gravity, Poisson Sigma Models and Loop Quantum Gravity  

E-Print Network (OSTI)

Spherically symmetric gravity in Ashtekar variables coupled to Yang-Mills theory in two dimensions and its relation to dilaton gravity and Poisson sigma models are discussed. After introducing its loop quantization, quantum corrections for inverse triad components are shown to provide a consistent deformation without anomalies. The relation to Poisson sigma models provides a covariant action principle of the quantum corrected theory with effective couplings. Results are also used to provide loop quantizations of spherically symmetric models in arbitrary D space-time dimensions.

Martin Bojowald; Juan D. Reyes

2008-10-28T23:59:59.000Z

308

Silica precipitation and scaling in a dynamic loop system. [Design and testing of titanium corrosion test loop  

DOE Green Energy (OSTI)

A titanium corrosion test loop was modified to provide a dynamic facility for studying the formation of silica precipitates and scale from simulated geothermal brines as a function of composition, temperature, and flow conditions. A schematic of the modified loop system is presented. The principal components and connecting piping are all constructed of commercially pure titanium. These components include a centrifugal pump, silica saturator column, segmented heat exchanger, reheat heat exchanger, and a high pressure feed pump (stainless steel). The system is designed to circulate simulated geothermal brines saturated with silica to approximately 300/sup 0/C for study of silica scaling. Data obtained from a test run are included. (JGB)

Bohlmann, E.G.; Shor, A.J.; Berlinski, P.

1977-01-01T23:59:59.000Z

309

Closed Loop Test Facility for hot dirty gas valves  

SciTech Connect

A design study of a closed loop test facility for eight-inch hot dirty gas valves is presented. The objective of the facility is to quality valves for use in coal gasifiers, combined cycle plants, and pressurized fluid bed combustors. Outline sketches and estimated costs are presented for the selected design.

Not Available

1980-02-06T23:59:59.000Z

310

Ideal kink instability of a magnetic loop equilibrium  

E-Print Network (OSTI)

The force-free coronal loop model by Titov & D\\'emoulin (1999} is found to be unstable with respect to the ideal kink mode, which suggests this instability as a mechanism for the initiation of flares. The long-wavelength ($m=1$) mode grows for average twists $\\Phi\\ga3.5\\pi$ (at a loop aspect ratio of $\\approx$ 5). The threshold of instability increases with increasing major loop radius, primarily because the aspect ratio then also increases. Numerically obtained equilibria at subcritical twist are very close to the approximate analytical equilibrium; they do not show indications of sigmoidal shape. The growth of kink perturbations is eventually slowed down by the surrounding potential field, which varies only slowly with radius in the model. With this field a global eruption is not obtained in the ideal MHD limit. Kink perturbations with a rising loop apex lead to the formation of a vertical current sheet below the apex, which does not occur in the cylindrical approximation.

T. Toeroek; B. Kliem; V. S. Titov

2003-11-09T23:59:59.000Z

311

Why Can Wind Delay the Shedding of Loop Current Eddies?  

Science Conference Proceedings (OSTI)

It is first shown that wind in the Gulf of Mexico can delay the shedding of Loop Current eddies. A time-dependent, three-dimensional numerical experiment forced by a spatially and temporally constant westward wind stress within the Gulf is ...

Y.-L. Chang; L.-Y. Oey

2010-11-01T23:59:59.000Z

312

Discrete gravity models and Loop Quantum Gravity: a short review  

E-Print Network (OSTI)

We review the relation between loop quantum gravity on a fixed graph and discrete models of gravity. We compare Regge and twisted geometries, and discuss discrete actions based on twisted geometries and on the discretization of the Plebanski action. We discuss the role of discrete geometries in the spin foam formalism, with particular attention to the definition of the simplicity constraints.

Dupuis, Maite; Speziale, Simone

2012-01-01T23:59:59.000Z

313

LOOP ROUTE UCSC CAMPUS SHUTTLES Saturday Service Hours  

E-Print Network (OSTI)

Way Social Sciences 2 ChinquapinRoad MERRILL COLLEGE McLaughlin Drive East Field House Hagar Drive, Hagar Drive, McLaughlin Drive, Heller Drive, and Empire Grade/High Street. Barn Theater Loop Science & Engineering Library Steinhart W ay Social Sciences 2 ChinquapinRoad MERRILL COLLEGE McLaughlin

California at Santa Cruz, University of

314

Energy of string loops and thermodynamics of dark energy  

Science Conference Proceedings (OSTI)

We discuss the thermodynamic aspects of a simple model of cosmic string loops, whose energy is nonlinearly related to their lengths. We obtain in a direct way an equation of state having the form p=-(1+{alpha}){rho}/3, with {rho} the energy density and 1+{alpha} the exponent which relates the energy u{sub l} of a loop with its length l as u{sub l}{approx}l{sup 1+{alpha}}. In the linear situation ({alpha}=0) one has p=-{rho}/3, in the quadratic one ({alpha}=1) p=-2{rho}/3, and in the cubic case ({alpha}=2) p=-{rho}. For all values of {alpha} the entropy goes as S{approx}(2-{alpha})L{sup 3/2} (L being the string length density). The expression of S is useful to explore the behavior of such string loops under adiabatic expansion of the Universe. Thermodynamic stability suggests that the gas of string loops must coexist with several long strings, longer than the horizon radius.

Jou, D. [Departament de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Catalonia (Spain); Mongiovi, M. S.; Sciacca, M. [Dipartimento di Metodi e Modelli Matematici, Universita di Palermo, Viale delle Scienze, 90128, Palermo (Italy)

2011-02-15T23:59:59.000Z

315

Water-Loop Heat Pump Systems: Volumes 1 and 2  

Science Conference Proceedings (OSTI)

Water-loop heat pump (WLHP) systems are reliable, versatile, energy-efficient alternatives to conventional systems such as packaged rooftop or central chiller systems. These systems offer low installed costs, unparalleled design flexibility, and an inherent ability to recover heat in a variety of commercial and multifamily residential buildings for both new construction and retrofit markets.

1993-04-01T23:59:59.000Z

316

Cerenkov's Effect and Neutrino Oscillations in Loop Quantum Gravity  

E-Print Network (OSTI)

Bounds on the scale parameter {\\cal L} arising in loop quantum gravity theory are derived in the framework of Cerenkov's effect and neutrino oscillations. Assuming that {\\cal L} is an universal constant, we infer {\\cal L}> 10^{-18}eV^{-1}, a bound compatible with ones inferred in different physical context.

G. Lambiase

2003-01-16T23:59:59.000Z

317

Loop Quantum Corrections to Statefinder Parameters of Dark Energy  

E-Print Network (OSTI)

In this short letter, we presented the explicit forms of the statefinder parameters for the Friedmann-Robertson-Walker (FRW) Universe in the loop quantum cosmology (LQC) for Holographic dark energy and New-Agegraphic dark energy. Numerically we investigated cosmological implications of these parameters for models of dark energy.

Jamil, Mubasher; Myrzakulov, Ratbay

2013-01-01T23:59:59.000Z

318

Loop Quantum Corrections to Statefinder Parameters of Dark Energy  

E-Print Network (OSTI)

In this short letter, we presented the explicit forms of the statefinder parameters for the Friedmann-Robertson-Walker (FRW) Universe in the loop quantum cosmology (LQC) for Holographic dark energy and New-Agegraphic dark energy. Numerically we investigated cosmological implications of these parameters for models of dark energy.

Mubasher Jamil; D. Momeni; Ratbay Myrzakulov

2013-05-17T23:59:59.000Z

319

A Mirnov loop array for field-reversed configurations  

SciTech Connect

An array of 64 magnetic pick-up loops has been used for stability studies of large field-reversed configurations in the FRX-C/LSM device. This array proved reliable, could resolve signals of a few Gauss, and allowed the detection of several plasma instabilities. 3 refs., 4 figs.

Tuszewski, M.

1990-01-01T23:59:59.000Z

320

Two-loop corrections to gluon fusion into two photons  

SciTech Connect

An overview of the calculation of the two-loop helicity amplitudes for scattering of two gluons into two photons is presented. These matrix elements enter into the recent improved calculation of the QCD background to Higgs boson decay into a pair of photons, which is the preferred search mode at the LHC for the case of a light Higgs boson.

Dixon, Lance

2002-12-20T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Micro loop heat pipe evaporator coherent pore structures  

E-Print Network (OSTI)

Loop heat pipes seem a promising approach for application in modern technologies where such thermal devices as cooling fans and radiators cannot satisfy overall requirements. Even though a loop heat pipe has a big potential to remove the thermal energy from a high heat flux source, the heat removal performance of heat pipes cannot be predicted well since a first principles of evaporation has not been established. An evaporation model based on statistical rate theory has been recently suggested by Ward and developed for a single pore by Oinuma. A loop heat pipe with coherent pore wick structure has been proposed as a design model. To limit product development risk and to enhance performance assurance, design model features and performance parameters have been carefully reviewed during the concept development phase and have been deliberately selected so as to be well-founded on the limited existing loop heat pipe knowledge base. A first principles evaporation model has been applied for evaporator geometry optimization. A number of iteration calculations have been performed to satisfy design and operating limitations. A set of recommendations for design optimization has been formulated. An optimal model has been found and proposed for manufacture and experimental investigation.

Alexseev, Alexandre Viktorovich

2003-08-01T23:59:59.000Z

322

Phase Locked Loop Control of Inverters in a Microgrid  

E-Print Network (OSTI)

Phase Locked Loop Control of Inverters in a Microgrid Matthew Surprenant Dept of ECE University Venkataramanan Dept of ECE University of Wisconsin Madison, WI, USA Abstract--Microgrids are small for inverter-based microsources within a mi- crogrid. The general control philosophy within a microgrid

Hiskens, Ian A.

323

Loop Current excursions and ring detachments during 19932009  

Science Conference Proceedings (OSTI)

Linkages between the variability of Loop Current LC surface dynamics, LC ring detachments, and the mean sea height anomaly in the Gulf of Mexico GOM are explored using a new methodology that locates the LC fronts and detects the shedding of LC rings. ...

David Lindo-Atichati, Francis Bringas, Gustavo Goni

2013-07-01T23:59:59.000Z

324

Polyhedral model based mapping optimization of loop nests for CGRAs  

Science Conference Proceedings (OSTI)

The coarse-grained reconfigurable architecture (CGRA) is a promising platform that provides both high performance and high power-efficiency. The compute-intensive portions of an application (e.g. loops) are often mapped onto CGRA for acceleration. To ...

Dajiang Liu, Shouyi Yin, Leibo Liu, Shaojun Wei

2013-05-01T23:59:59.000Z

325

Retrofit Legislation at the Urban Level  

NLE Websites -- All DOE Office Websites (Extended Search)

Retrofit Legislation at the Urban Level Retrofit Legislation at the Urban Level In March, the city of Berkeley, California, passed new legislation that should serve as a model for local policies intended to keep energy dollars within the community while protecting the environment. The Commercial Energy Conservation Ordinance (CECO) is based on a similar ordinance that has been law since 1989 in San Francisco, Berkeley's neighbor across the Bay. San Francisco is currently the only other city in the world to have this type of legislation. As part of the Berkeley Municipal Code, CECO requires commercial buildings to undergo energy conservation retrofits when they are sold or substantially renovated. CECO was designed with the participation of LBL's Kristin Heinemeier, who also works with the Berkeley

326

NICKEL SPECIATION OF URBAN PARTICULATE MATTER  

SciTech Connect

A four-step sequential Ni extraction method, summarized in Table AB-1, was evaluated for identifying and quantifying the Ni species occurring in urban total suspended particulate (TSP) matter and fine particulate matter (<10 {micro}m [PM{sub 10}] and <2.5 {micro}m [PM{sub 2.5}] in aerodynamic diameter). The extraction method was originally developed for quantifying soluble, sulfidic, elemental, and oxidic forms of Ni that may occur in industrial atmospheres. X-ray diffraction (XRD) and x-ray absorption fine structure (XAFS) spectroscopy were used to evaluate the Ni species selectivity of the extraction method. Uncertainties in the chemical speciation of Ni in urban PM{sub 10} and PM{sub 2.5} greatly affect inhalation health risk estimates, primarily because of the large variability in acute, chronic, and cancer-causing effects for different Ni compounds.

Kevin C. Galbreath; Charlene R. Crocker; Carolyn M. Nyberg; Frank E. Huggins; Gerald P. Huffman

2003-10-01T23:59:59.000Z

327

Urban Network Systems - Technologies and Best Practices  

Science Conference Proceedings (OSTI)

This report describes the results of Phase II of a multiyear effort to identify noteworthy practices in managing urban network systems. The report profiles the practices (people, processes, and technology) in place at one host utility, The Illuminating Company (CEI), a FirstEnergy company serving the greater Cleveland area. In addition, this report highlights the similarities and differences in practices in place at The Illuminating Company and at two other utilities, Seattle City Light (SCL) and Con Edi...

2009-06-30T23:59:59.000Z

328

PHYSICAL PROPERTIES OF COOLING PLASMA IN QUIESCENT ACTIVE REGION LOOPS  

Science Conference Proceedings (OSTI)

In the present work, we use SOHO/SUMER, SOHO/UVCS, SOHO/EIT, SOHO/LASCO, STEREO/EUVI, and Hinode/EIS coordinated observations of an active region (AR 10989) at the west limb taken on 2008 April 8 to study the cooling of coronal loops. The cooling plasma is identified using the intensities of SUMER spectral lines emitted at temperatures in the 4.15 {EIS and SUMER spectral observations are used to measure the physical properties of the loops. We found that before cooling took place these loops were filled with coronal hole-like plasma, with temperatures in the 5.6 {<=} log T {<=} 5.9 range. SUMER spectra also allowed us to determine the plasma temperature, density, emission measure, element abundances, and dynamic status during the cooling process. The ability of EUVI to observe the emitting region from a different direction allowed us to measure the volume of the emitting region and estimate its emission measure. Comparison with values measured from line intensities provided us with an estimate of the filling factor. UVCS observations of the coronal emission above the active region showed no streamer structure associated with AR 10989 at position angles between 242{sup 0}and 253.{sup 0} EIT, LASCO, and EUVI-A narrowband images and UVCS spectral observations were used to discriminate between different scenarios and monitor the behavior of the active region in time. The present study provides the first detailed measurements of the physical properties of cooling loops, a very important benchmark for theoretical models of loop cooling and condensation.

Landi, E. [Artep, Inc. at Naval Research Laboratory, 4555 Overlook Ave. S.W., 20375-5320, Washington DC (United States); Miralles, M. P. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., MS-50, Cambridge, MA 02138 (United States); Curdt, W. [Max Planck Institut fuer Sonnensystemforschung, Max Planck Strasse 2, Katlenburg-Lindau 37191 (Germany); Hara, H. [National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588 (Japan)

2009-04-10T23:59:59.000Z

329

An overview on the Urban Boundary-layer Atmosphere Network in Helsinki  

Science Conference Proceedings (OSTI)

Helsinki UrBAN (Urban Boundary-layer Atmosphere Network, http://urban.fmi.fi) is a dedicated research-grade observational network where we study the physical processes in the atmosphere above the city. Helsinki UrBAN is the most poleward intensive urban ...

Wood CR; Jrvi L; Kouznetsov RD; Nordbo A; Joffre S; Drebs A; Vihma T; Hirsikko A; Suomi I; Fortelius C; O'Connor E; Moiseev D; Haapanala S; Moilanen J; Kangas M; Karppinen A; Vesala T; Kukkonen J

330

Toyota_RAV4.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

1999 Inductive version tested. 1999 Inductive version tested. Test Date: June 1999 / Revised: 10/07/99 1999 TOYOTA RAV4-EV* (NIMH BATTERIES) PERFORMANCE CHARACTERIZATION SUMMARY ELECTRIC TRANSPORTATION DIVISION Urban Range (On Urban Pomona Loop - see other side for map) Payload (lb) 92.8 89.5 84.8 Range Without Aux. loads With Aux. loads Maximum 760 Minimum 160 UR1 UR2 UR3 UR4 68.9 Test UR1 UR2 UR3 UR4 Payload (lb.) 160 160 766 766 AC kWh Recharge 31.80 33.96 32.72 32.22 AC kWh/mi. 0.329 0.394 0.360 0.434 Range (mi.) 92.8 84.8 89.5 68.9 Avg. Ambient Temp. 68.5°F 75.3°F 80.0°F 87.0°F Note: A/C fluctuating and may have impacted A/C tests. UR1 Urban Range Test, Min Payload, No Auxiliary Loads UR2 Urban Range Test, Min Payload, A/C on High, Headlights on Low, Radio On UR3 Urban Range Test, Max Payload, No Auxiliary Loads UR4

331

Conversion of agricultural land to urban use  

SciTech Connect

The large amount of land lost each year to urbanization has led nearly all states to adopt legislation that grants tax preferences to agricultural land use. Several studies have analyzed the effects of such policies on the rate of land development and on the total amount of land eventually developed. However, these studies have only analyzed permanent tax-rate changes despite the fact that most such changes are temporary. A distinction is made in this study between temporary, permanent, anticipated, and unanticipated tax-rate increases. Using a hedonic approach, the elasticity of supply of urban fringe land in McHenry County, Illinois is estimated to be approximately 0.30, which indicates that the amount of land converted to urban use is unlikely to be affected much by these polices. The hedonic approach as usually implemented is shown to lead to inconsistent parameter estimates. A consistent estimation procedure is proposed that produces testable cross-equation restrictions. A restriction is implied in the empirical section of this study by the use of the Box-Cox transformation to generalize functional form; it is tested and is not rejected. However, little is known about the small-sample properties of this transformation. To rectify this, a Monte Carlo study is conducted of the performance of Lagrange Multiplier tests for incorrect functional form and heteroskedasticity in a model that uses this transformation.

McMillen, D.P.

1987-01-01T23:59:59.000Z

332

On the universality of some Smarandache loops of Bol-Moufang type  

E-Print Network (OSTI)

A Smarandache quasigroup(loop) is shown to be universal if all its f,g-principal isotopes are Smarandache f,g-principal isotopes. Also, weak Smarandache loops of Bol-Moufang type such as Smarandache: left(right) Bol, Moufang and extra loops are shown to be universal if all their f,g-principal isotopes are Smarandache f,g-principal isotopes. Conversely, it is shown that if these weak Smarandache loops of Bol-Moufang type are universal, then some autotopisms are true in the weak Smarandache sub-loops of the weak Smarandache loops of Bol-Moufang type relative to some Smarandache elements. Futhermore, a Smarandache left(right) inverse property loop in which all its f,g-principal isotopes are Smarandache f,g-principal isotopes is shown to be universal if and only if it is a Smarandache left(right) Bol loop in which all its f,g-principal isotopes are Smarandache f,g-principal isotopes. Also, it is established that a Smarandache inverse property loop in which all its f,g-principal isotopes are Smarandache f,g-principal isotopes is universal if and only if it is a Smarandache Moufang loop in which all its f,g-principal isotopes are Smarandache f,g-principal isotopes. Hence, some of the autotopisms earlier mentioned are found to be true in the Smarandache sub-loops of universal Smarandache: left(right) inverse property loops and inverse property loops.

Temitope Gbolahan Jaiyeola

2006-07-28T23:59:59.000Z

333

An Analysis of Loop Current Frontal Eddies in a Atlantic Ocean Model Simulation  

Science Conference Proceedings (OSTI)

The Loop Current frontal eddies (LCFEs) refer to cyclonic cold eddies moving downstream along the outside edge of the Loop Current in the eastern Gulf of Mexico. They have been observed by in situ measurements and satellite imagery, mostly ...

Haosheng Huang; Nan D. Walker; Ya Hsueh; Yi Chao; Robert R. Leben

2013-09-01T23:59:59.000Z

334

On the Linear Relationship between Loop Current Retreat Latitude and Eddy Separation Period  

Science Conference Proceedings (OSTI)

A linear correlation exists between the retreat latitude of the Loop Current following eddy separation and the subsequent eddy separation period. This empirical relationship was first identified in satellite altimeter-derived Loop Current ...

Alexis Lugo-Fernndez; Robert R. Leben

2010-12-01T23:59:59.000Z

335

An Analysis of Loop Current Frontal Eddies in a 1/6 Atlantic Ocean Model Simulation  

Science Conference Proceedings (OSTI)

The Loop Current Frontal Eddies (LCFEs) refer to cyclonic cold eddies moving downstream along the outside edge of the Loop Current in the eastern Gulf of Mexico. They have been observed by in-situ measurements and satellite imagery, mostly ...

Haosheng Huang; Nan D. Walker; Ya Hsueh; Yi Chao; Robert R. Leben

336

Evaluation of I-10 Pomona (07-181304) Long-Life Pavement Rehabilitation Costs  

E-Print Network (OSTI)

the expenditures for these projects, costs were divided intofurnished materials. Project Cost Breakdown Original BidIndirect Costs Figure 1. Project cost breakdown based on

Harvey, John T; Santero, Nicholas J; G, Mary Fermo

2005-01-01T23:59:59.000Z

337

More Than Not Urban: Seeking a Quantifiable Definition of Rural  

E-Print Network (OSTI)

2010. 2010 Census Urban and Rural Classification and Urbanwillamson_2003.cfm. California Rural Legal Assistance, Inc.and Opportunities in Four Rural Americas. Durham: University

Miller, Ruth

2013-01-01T23:59:59.000Z

338

Urban Bias, Rural Sexual Minorities, and the Courts  

E-Print Network (OSTI)

Sexual-Minority Adolescents in Rural Communities in British1967)). Id. Urban Bias, Rural Sexual Minorities entationsitive to the fact that many rural sexual minorities engage

Luke, Boso

2013-01-01T23:59:59.000Z

339

Decentralizing urbanization : harnessing the potential of small cities in India  

E-Print Network (OSTI)

Perceived as symbols of national development or degeneration, megacities continue to dominate discourse and action related to urbanization, particularly in developing countries like India. Simultaneously, a large portion ...

Suri, Sagarika

2011-01-01T23:59:59.000Z

340

ICLEI Sustainable Urban Energy Planning | Open Energy Information  

Open Energy Info (EERE)

ICLEI Sustainable Urban Energy Planning ICLEI Sustainable Urban Energy Planning Jump to: navigation, search Tool Summary LAUNCH TOOL Name: ICLEI Sustainable Urban Energy Planning Agency/Company /Organization: ICLEI - Local Governments for Sustainability Sector: Energy Focus Area: Renewable Energy, Energy Efficiency Topics: Background analysis, Implementation, Low emission development planning, Policies/deployment programs Website: www.iclei.org/ References: ICLEI Homepage [1] "ICLEI - Local Governments for Sustainability is an international association of local governments as well as national and regional local government organizations that have made a commitment to sustainable development."[1] Sustainable Urban Energy Planning: A handbook for cities and towns in developing countries

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Advanced Vehicle Testing Activity: Urban Electric Vehicle Specificatio...  

NLE Websites -- All DOE Office Websites (Extended Search)

Test Procedures to someone by E-mail Share Advanced Vehicle Testing Activity: Urban Electric Vehicle Specifications and Test Procedures on Facebook Tweet about Advanced Vehicle...

342

Urban Eyes: Ultra-wideband (UWB) Detecting and Tracking  

California, Lawrence Livermore National Laboratory, under Contract No. W-7405-Eng-48. UCRL-PRES-217242 Urban Eyes is a man-portable micro-power

343

Promoting Low Emission Urban Development Strategies in Emerging...  

Open Energy Info (EERE)

Project (URBAN LEDS) AgencyCompany Organization ICLEI - Local Governments for Sustainability Sector Climate, Energy Focus Area Renewable Energy, Energy Efficiency Topics Low...

344

Promoting Low Emission Urban Development Strategies in Emerging...  

Open Energy Info (EERE)

Countries (URBAN-LEDS) AgencyCompany Organization ICLEI - Local Governments for Sustainability, European Commission, UN Habitat Sector Climate, Energy Focus Area Renewable...

345

Adapting Urban Transport to Climate Change- Module 5f - Sustainable...  

Open Energy Info (EERE)

Urban Transport to Climate Change- Module 5f - Sustainable transport: a sourcebook for policy-makers in developing cities Jump to: navigation, search Tool Summary Name: Adapting...

346

Urban Search and Rescue Robots Nationwide Deploy for ...  

Science Conference Proceedings (OSTI)

... aquatic emergency response robots from across the country will face realistic urban search and rescue challenges April 4-6 at Disaster City near ...

2010-10-05T23:59:59.000Z

347

Global cooling: increasing world-wide urban albedos to offset...  

NLE Websites -- All DOE Office Websites (Extended Search)

In addition, increasing urban albedo can result in less absorption of incoming solar radiation by the surface-troposphere system, countering to some extent the global scale...

348

Cosmopolis Now: Urban Narratives in the Age of Global Migration  

E-Print Network (OSTI)

Rishora. The Passionate Cosmopolitan in Salman RushdiesCraig Young, eds. Cosmopolitan Urbanism. London: Routledge,Keith, After the Cosmopolitan? : Multicultural Cities and

Jirn, Jin Suh

2012-01-01T23:59:59.000Z

349

Advanced Vehicle Testing Activity: Urban Electric Vehicle Special...  

NLE Websites -- All DOE Office Websites (Extended Search)

Special Projects to someone by E-mail Share Advanced Vehicle Testing Activity: Urban Electric Vehicle Special Projects on Facebook Tweet about Advanced Vehicle Testing Activity:...

350

Advanced Vehicle Testing Activity: Urban Electric Vehicle Testing...  

NLE Websites -- All DOE Office Websites (Extended Search)

Testing Reports to someone by E-mail Share Advanced Vehicle Testing Activity: Urban Electric Vehicle Testing Reports on Facebook Tweet about Advanced Vehicle Testing Activity:...

351

Discussions@TMS - What are the recycling trends between urban ...  

Science Conference Proceedings (OSTI)

Oct 4, 2007 ... Topic Title: What are the recycling trends between urban and rural areas and are there any specific infrastructure needs? Topic Summary:...

352

Urban aerosols harbor diverse and dynamic bacterial populations  

Urban aerosols harbor diverse and dynamic bacterial populations Eoin L. Brodie, Todd Z. DeSantis, Jordan P. Moberg Parker, Ingrid X. Zubietta, Yvette M. Piceno, and ...

353

Urban-rural differences in distal forearm fractures: Cohort Norway  

Science Conference Proceedings (OSTI)

with increasing degree of urbanization for both genders in ... The capital city of Oslo still had a higher incidence ... energy wrist fracture have osteoporosis (T-

354

Quality and Price Perceptions of Urban Chinese Consumers.  

E-Print Network (OSTI)

??Abstract Quality and price are two product attributes that urban Chinese consumers always take into consideration in the evaluation of alternative brands. Understanding how they (more)

Zhang , Chun

2009-01-01T23:59:59.000Z

355

Texas Avenue mixed-use urban street redevelopment, Lubbock, Texas.  

E-Print Network (OSTI)

??This thesis focused primarily on establishing design principles for mixed-use urban street redevelopment. This study began with a literature review exploring the history of modern (more)

[No author

356

Studies of urban atmospheric aerosols using lidar and sky radiometer.  

E-Print Network (OSTI)

???This thesis discusses the remote sensing of atmospheric aerosols, the corresponding instrumental technology and inversion algorithm. The urban aerosol optical properties in Hong Kong have (more)

Yang, Xun (??)

2008-01-01T23:59:59.000Z

357

BNL | TCP News | NYU's Center for Urban Science and Progress ...  

... and emergency preparedness to some of the real problems facing New York and other urban communities is exciting to our engineers and scientists," ...

358

taking charge : optimizing urban charging infrastructure for shared electric vehicles  

E-Print Network (OSTI)

This thesis analyses the opportunities and constraints of deploying charging infrastructure for shared electric vehicles in urban environments. Existing electric vehicle charging infrastructure for privately owned vehicles ...

Subramani, Praveen

2012-01-01T23:59:59.000Z

359

The HIGGS Boson Mass at 2 Loops in the Finely Tuned Split Supersymmetric Standard Model  

SciTech Connect

The mass of the Higgs boson in the finely tuned Split Supersymmetric Standard Model is calculated. All 1 loop threshold effects are included, in addition to the full RG running of the Higgs quartic coupling through 2 loops. The 2 loop corrections are very small, typically less than 1GeV. The 1 loop threshold corrections to the top yukawa coupling and the Higgs mass generally push the Higgs mass down a few GeV.

Binger, M

2004-09-08T23:59:59.000Z

360

Particle sorter comprising a fluid displacer in a closed-loop fluid circuit  

SciTech Connect

Disclosed herein are methods and devices utilizing a fluid displacer in a closed-loop fluid circuit.

Perroud, Thomas D. (San Jose, CA); Patel, Kamlesh D. (Dublin, CA); Renzi, Ronald F. (Tracy, CA)

2012-04-24T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Characterizing Variability of the Urban Physical Environment for a Suite of Cities in Rondnia, Brazil  

Science Conference Proceedings (OSTI)

Urban environments are characterized by high spectral and spatial heterogeneity and, as a consequence, most urban pixels in moderate-resolution imagery contain multiple land-cover materials. Despite these complexities, virtually all urban land ...

Rebecca L. Powell; Dar A. Roberts

2008-08-01T23:59:59.000Z

362

Brief Nonlinear stabilization of a thermal convection loop by state feedback  

Science Conference Proceedings (OSTI)

A nonlinear feedback control law that achieves global asymptotic stabilization of a 2D thermal convection loop (widely known for its ''Lorenz system'' approximation) is presented. The loop consists of viscous Newtonian fluid contained in between two ... Keywords: Backstepping, Boundary control, Convection loop

Dejan M. BoKovi?; Miroslav Krsti?

2001-12-01T23:59:59.000Z

363

Model Free Closed-Loop Flow Control ERCAN ATAM, LIONEL MATHELIN, LAURENT CORDIER  

E-Print Network (OSTI)

Model Free Closed-Loop Flow Control ERCAN ATAM, LIONEL MATHELIN, LAURENT CORDIER *CNRS- Mathelin-Cordier (LIMSI-CNRS,IP') Model Free Closed-Loop Flow Control ECCOMAS'12 1 / 21 #12;Outline 1 and some future work Atam- Mathelin-Cordier (LIMSI-CNRS,IP') Model Free Closed-Loop Flow Control ECCOMAS'12

Mathelin, Lionel

364

Development of a Hardware-in-the-loop Simulation System for Hybrid Electric Vehicle Performance Test  

Science Conference Proceedings (OSTI)

In order to facilitate control strategy development and performance test of hybrid electric vehicle, a hardware-in-the-loop simulation system is developed. The system is constructed with LabVIEW and PXI hardware. Hardware-in-the-loop simulation test ... Keywords: hybrid electric vehicle, hardware-in-the-loop simulation, fuel economy, exhaust emission

Yanyi Zhang, Zhenhua Jin, Haoduan Wang, Qingchun Lu

2012-07-01T23:59:59.000Z

365

Ga-based passive loop optimization for magnetic field mitigation of transmission lines  

Science Conference Proceedings (OSTI)

This paper presents a systematic method to assist in the design of passive loops with the aim of mitigating the magnetic field generated by overhead transmission lines. The procedure is based on a two-dimensional (2D) modeling of the magnetic field, ... Keywords: Compensated loop, Genetic algorithm, Magnetic field, Mitigation, Passive loop, Reduction factor

Pedro Cruz; Jess M. Riquelme; Antonio de la Villa; Jos L. Martnez

2007-10-01T23:59:59.000Z

366

DC's Marble ceiling : urban height and its regulation in Washington, DC; Urban height and its regulation in Washington, DC.  

E-Print Network (OSTI)

??Washington, DC has a unique urban form that is the result of a century-old law. Through the narrow lens of DC's height limit, I survey (more)

Trueblood, Andrew Tyson

2009-01-01T23:59:59.000Z

367

taking charge : optimizing urban charging infrastructure for shared electric vehicles; Optimizing urban charging infrastructure for shared electric vehicles.  

E-Print Network (OSTI)

??This thesis analyses the opportunities and constraints of deploying charging infrastructure for shared electric vehicles in urban environments. Existing electric vehicle charging infrastructure for privately (more)

Subramani, Praveen

2012-01-01T23:59:59.000Z

368

Microsoft Word - DOE Report on OSU Looping final.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

December 2007 December 2007 DOE/NETL-2008/1307 Independent Assessment of the Potential of Chemical-Looping in the Context of a Fischer-Tropsch Plant Chemical-Looping Process in a Coal-to-Liquids Configuration Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name,

369

NETL: Alstom's Chemical Looping Combustion Technology with CO2 Capture  

NLE Websites -- All DOE Office Websites (Extended Search)

Oxy-Combustion CO2 Emissions Control Oxy-Combustion CO2 Emissions Control Commercialization of the Iron Based Coal Direct Chemical Looping Process for Power Production with in situ CO2 Capture Project No.: DE-FE0009761 CDLC Process Concept CDLC Process Concept (click to enlarge) Babcock & Wilcox Power Generation Group (B&W) is developing the coal direct chemical looping (CDCL) process. The CDCL process consists of a unique moving bed reactor - the reducer - where pulverized coal is fully converted using iron-based oxygen carriers. The oxygen carrier is reduced from Fe2O3 to FeO/Fe and the flue gas is a concentrated stream of CO2 that is available for storage or beneficial use. The reduced FeO/Fe is oxidized to Fe2O3 using air in the combustor, liberating heat to produce steam for a

370

A loop group extension of the odd Chern character.  

E-Print Network (OSTI)

We show that the universal odd Chern form, defined on the stable unitary group $U$, extends to the loop group $LU$ in a way that is closed with respect to an equivariant-type differential. This provides an odd analogue to the Bismut-Chern form. We also describe the associated transgression form, the so-called Bismut-Chern-Simons form, and explicate some properties it inherits as a differential form on the space of maps of a cylinder into the stable unitary group. As a corollary, we obtain the Chern character homomorphism from odd K-theory to the periodic cohomology of the free loop space, represented geometrically on the level of differential forms.

Scott O. Wilson

371

Scaling law for the heating of solar coronal loops  

E-Print Network (OSTI)

We report preliminary results from a series of numerical simulations of the reduced magnetohydrodynamic equations, used to describe the dynamics of magnetic loops in active regions of the solar corona. A stationary velocity field is applied at the photospheric boundaries to imitate the driving action of granule motions. A turbulent stationary regime is reached, characterized by a broadband power spectrum $E_k\\simeq k^{-3/2}$ and heating rate levels compatible with the heating requirements of active region loops. A dimensional analysis of the equations indicates that their solutions are determined by two dimensionless parameters: the Reynolds number and the ratio between the Alfven time and the photospheric turnover time. From a series of simulations for different values of this ratio, we determine how the heating rate scales with the physical parameters of the problem, which might be useful for an observational test of this model.

Pablo Dmitruk; Daniel Gomez

1999-10-18T23:59:59.000Z

372

Magnetic and electric screening masses from Polyakov-loop correlations  

E-Print Network (OSTI)

Screening properties of the quark gluon plasma are studied from Polyakov-loop correlation in lattice QCD simulations with two flavors of improved Wilson quarks at temperatures $T/\\Tpc \\simeq 1$--4 where $\\Tpc$ is the pseudocritical temperature. Using the Euclidean-time reflection symmetry and the charge conjugation symmetry, we introduce various types of Polyakov-loop correlation functions and extract screening masses in magnetic and electric sectors. We find that the temperature dependence of the screening masses are well described by the weak coupling expansion. We also find that a ratio of the screening masses in the electric sector to the magnetic sector shows qualitative agreement with a prediction from the dimensionally-reduced effective field theory and the N=4 supersymmetric Yang-Mills theory at $1.3 < T/\\Tpc < 3$.

Y. Maezawa; S. Aoki; S. Ejiri; T. Hatsuda; N. Ishii; K. Kanaya; N. Ukita; T. Umeda

2008-11-04T23:59:59.000Z

373

Dynamical eigenfunctions and critical density in loop quantum cosmology  

E-Print Network (OSTI)

We offer a new, physically transparent argument for the existence of the critical, universal maximum matter density in loop quantum cosmology for the case of a flat Friedmann-Lemaitre-Robertson-Walker cosmology with scalar matter. The argument is based on the existence of a sharp exponential ultraviolet cutoff in momentum space on the eigenfunctions of the quantum cosmological dynamical evolution operator (the gravitational part of the Hamiltonian constraint), attributable to the fundamental discreteness of spatial volume in loop quantum cosmology. The existence of the cutoff is proved directly from recently found exact solutions for the eigenfunctions for this model. As a consequence, the operators corresponding to the momentum of the scalar field and the spatial volume approximately commute. The ultraviolet cutoff then implies that the scalar momentum, though not a bounded operator, is in effect bounded on subspaces of constant volume, leading to the upper bound on the expectation value of the matter densit...

Craig, David A

2012-01-01T23:59:59.000Z

374

Transmission of energy by open-loop chemical energy pipeline  

DOE Green Energy (OSTI)

The primary objective of this program is to evaluate the technical feasibility and, in a preliminary fashion, the economic viability of transmitting and storing energy by an open-loop modification of the reversible chemical energy pipeline system known as EVA/ADAM. The work designed to achieve this objective includes: (1) the preliminary design of a nuclear (HTGR) and methane-based open-loop system; (2) evaluation of energy sources as alternatives to those in the preliminary design (e.g., coal gasification and HTGR/LNG); (3) assessment of the feasibility of using existing natural gas pipelines and storage systems for the synthesis gas; (4) assessment of existing methanation technologies and interchangeability of the SNG with natural gas; (5) evaluation of the various alternative energy end-uses for heat, SNG, and electricity; and (6) development of two conceptual designs and evaluation of their economics and environmental impacts.

Baker, N R

1977-01-01T23:59:59.000Z

375

Wilson loops in string duals of walking and flavored systems  

Science Conference Proceedings (OSTI)

We consider the vacuum expectation value of Wilson loop operators by studying the behavior of string probes in solutions of type-IIB string theory generated by N{sub c} D5-branes wrapped on an S{sup 2} internal manifold. In particular, we focus on solutions to the background equations that are dual to field theories with a walking gauge coupling as well as for flavored systems. We present in detail our walking solution and emphasize various general aspects of the procedure to study Wilson loops using string duals. We discuss the special features that the strings show when probing the region associated with the walking of the field-theory coupling.

Nunez, Carlos; Piai, Maurizio; Rago, Antonio [Swansea University, School of Physical Sciences, Singleton Park, Swansea, Wales (United Kingdom)

2010-04-15T23:59:59.000Z

376

The Circadian Rhythm, A Continuous Transcription-Translation Feedback Loop,  

NLE Websites -- All DOE Office Websites (Extended Search)

Circadian Rhythm, A Continuous Transcription-Translation Feedback Loop, Circadian Rhythm, A Continuous Transcription-Translation Feedback Loop, Contributes to Low-Dose Radiation-Induced Radioadaptive Response Aris Alexandrou University of California Davis Abstract The initiation of the circadian rhythm field occurred when the Takahashi group defined a mutation in the mouse gene “Clock” and cloned the circadian locomotor output cycles kaput (Clock) in the mid-1990’s (1-3). Currently more than a dozen clock genes have been identified (3-4). Disruptions in the circadian rhythm via changes in environmental conditions, such as, diet, temperature, and night/day hours lead to the pathogenesis of a multitude of diseases, such as, cancer, diabetes mellitus, neurological diseases, and sleep disorders. A disruption in the

377

3-d lattice SU(3) free energy to four loops  

E-Print Network (OSTI)

We report on the perturbative computation of the 3d lattice Yang-Mills free energy to four loops by means of Numerical Stochastic Perturbation Theory. The known first and second orders have been correctly reproduced; the third and fourth order coefficients are new results and the known logarithmic IR divergence in the fourth order has been correctly identified. Progress is being made in switching to the gluon mass IR regularization and the related inclusion of the Faddeev-Popov determinant.

F. Di Renzo; A. Mantovi; V. Miccio; Y. Schroder; C. Torrero

2004-09-27T23:59:59.000Z

378

THERMAL HYDRAULIC ANALYSIS OF A GAS TEST LOOP SYSTEM  

Science Conference Proceedings (OSTI)

This paper discusses thermal hydraulic calculations for a Gas Test Loop (GTL) system designed to provide a high intensity fast-flux irradiation environment for testing fuels and materials for advanced concept nuclear reactors. To assess the performance of candidate reactor fuels, these fuels must be irradiated under actual fast reactor flux conditions and operating environments, preferably in an existing irradiation facility [1]. Potential users of the GTL include the Generation IV Reactor Program, the Advanced Fuel Cycle Initiative and Space Nuclear Programs.

Donna Post Guillen; James E. Fisher

2005-11-01T23:59:59.000Z

379

Closed-loop air cooling system for a turbine engine  

DOE Patents (OSTI)

Method and apparatus are disclosed for providing a closed-loop air cooling system for a turbine engine. The method and apparatus provide for bleeding pressurized air from a gas turbine engine compressor for use in cooling the turbine components. The compressed air is cascaded through the various stages of the turbine. At each stage a portion of the compressed air is returned to the compressor where useful work is recovered.

North, William Edward (Winter Springs, FL)

2000-01-01T23:59:59.000Z

380

A Quick Derivation of the Loop Equations for Random Matrices  

E-Print Network (OSTI)

The "loop equations" of random matrix theory are a hierarchy of equations born of attempts to obtain explicit formulae for generating functions of map enumeration problems. These equations, originating in the physics of 2-dimensional quantum gravity, have lacked mathematical justification. The goal of this paper is to provide a complete and short proof, relying on a recently established complete asymptotic expansion for the random matrix theory partition function.

N. M. Ercolani; K. D. T-R McLaughlin

2006-09-18T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Waveguide and loop coupling to fast MHD toroidal eigenmodes  

SciTech Connect

Heating of plasmas by wave techniques requires an effective method of coupling rf energy to the plasma. In cavities the presence of weakly damped eigenmodes will enhance the loading of antennas when the wave frequency equals an eigenmode frequency. This report considers two methods of coupling to fast MHD eigenmodes in a toroidal cavity: one is by a waveguide mounted perpendicular to the vacuum vessel wall; and the other by a loop placed within the cavity. (auth)

Paoloni, F.J.

1975-12-01T23:59:59.000Z

382

Integrated Framework toward a Closed Loop Measurement and Verification  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrated Framework toward a Closed Loop Measurement and Verification Integrated Framework toward a Closed Loop Measurement and Verification Approach Title Integrated Framework toward a Closed Loop Measurement and Verification Approach Publication Type Conference Proceedings Year of Publication 2011 Authors Earni, Shankar, Philip Coleman, and Mark D. Sanders Conference Name ACEEE Summer Study on Energy Efficiency in Industry Volume 1 Pagination 68-79 Date Published 1/2011 Abstract This study reviews a sample set of measurement and verification (M&V) plans from federal ESPC projects to understand and assess the overall status of M&V practices. The review identifies some of the key issues that need to be addressed to improve the rigor and transparency of M&V practices. To mitigate some of the identified M&V issues, this work also reviews existing M&V protocols, guidelines and other pertinent literature to identify strategies that can augment traditional M&V approaches. The authors provide a framework to identify ways to integrate M&V and commissioning activities into the ESPC process, combining M&V activities and advanced meter data into a monitoring-based commissioning approach that reduces the uncertainty of savings while ensuring their persistence.

383

Contrasting HIV phylogenetic relationships and V3 loop protein similarities  

Science Conference Proceedings (OSTI)

At least five distinct sequence subtypes of HIV-I can be identified from the major centers of the AMS pandemic. While it is too early to tell whether these subtypes are serologically or phenotypically similar or distinct in terms of properties such as pathogenicity and transmissibility, we can begin to investigate their potential for phenotypic divergence at the protein sequence level. Phylogenetic analysis of HIV DNA sequences is being widely used to examine lineages of different viral strains as they evolve and spread throughout the globe. We have identified five distinct HIV-1 subtypes (designated A-E), or clades, based on phylogenetic clustering patterns generated from genetic information from both the gag and envelope (env) genes from a spectrum of international isolates. Our initial observations concerning both HIV-1 and HIV-2 sequences indicate that conserved patterns in protein chemistry may indeed exist across distant lineages. Such patterns in V3 loop amino acid chemistry may be indicative of stable lineages or convergence within this highly variable, though functionally and immunologically critical, region. We think that there may be parallels between the apparently stable HIV-2 V3 lineage and the previously mentioned HIV-1 V3 loops which are very similar at the protein level despite being distant by cladistic analysis, and which do not possess the distinctive positively charged residues. Highly conserved V3 loop protein sequences are also encountered in SIVAGMs and CIVs (chimpanzee viral strains), which do not appear to be pathogenic in their wild-caught natural hosts.

Korber, B. [Los Alamos National Lab., NM (United States)]|[Santa Fe Inst., NM (United States); Myers, G. [Los Alamos National Lab., NM (United States)

1992-12-31T23:59:59.000Z

384

Contrasting HIV phylogenetic relationships and V3 loop protein similarities  

Science Conference Proceedings (OSTI)

At least five distinct sequence subtypes of HIV-I can be identified from the major centers of the AMS pandemic. While it is too early to tell whether these subtypes are serologically or phenotypically similar or distinct in terms of properties such as pathogenicity and transmissibility, we can begin to investigate their potential for phenotypic divergence at the protein sequence level. Phylogenetic analysis of HIV DNA sequences is being widely used to examine lineages of different viral strains as they evolve and spread throughout the globe. We have identified five distinct HIV-1 subtypes (designated A-E), or clades, based on phylogenetic clustering patterns generated from genetic information from both the gag and envelope (env) genes from a spectrum of international isolates. Our initial observations concerning both HIV-1 and HIV-2 sequences indicate that conserved patterns in protein chemistry may indeed exist across distant lineages. Such patterns in V3 loop amino acid chemistry may be indicative of stable lineages or convergence within this highly variable, though functionally and immunologically critical, region. We think that there may be parallels between the apparently stable HIV-2 V3 lineage and the previously mentioned HIV-1 V3 loops which are very similar at the protein level despite being distant by cladistic analysis, and which do not possess the distinctive positively charged residues. Highly conserved V3 loop protein sequences are also encountered in SIVAGMs and CIVs (chimpanzee viral strains), which do not appear to be pathogenic in their wild-caught natural hosts.

Korber, B. (Los Alamos National Lab., NM (United States) Santa Fe Inst., NM (United States)); Myers, G. (Los Alamos National Lab., NM (United States))

1992-01-01T23:59:59.000Z

385

Duality relation between radiation thermodynamics and cosmic string loop thermodynamics  

SciTech Connect

We discuss thermodynamics of electromagnetic radiation, with p=(1/3){rho} and S{proportional_to}T{sup 3}V, and of cosmic string loops, with p=-(1/3){rho} and S{proportional_to}T{sup -3}V, where p stands for pressure, T temperature, {rho} energy density, S entropy, and V volume. We write the thermodynamic formalisms under a common framework that illustrates their formal relationship and allows us to go from one to the other through a smooth transformation. From a microscopic perspective, these relations arise from the energy relations u({lambda})=hc/{lambda} for the photons of electromagnetic radiation, and u(l)=(c{sup 4}/a{sup 2}G)l for cosmic string loops, a being a numerical (dimensionless) constant and {lambda} and l the radiation wavelength and the length of a loop; G, c, and h are the gravitational constant, the speed of light in vacuo, and the Planck constant, respectively. The corresponding thermodynamic behaviors are seen to be connected through a related thermal duality corresponding to the change of T by T*=T{sub c}{sup 2}/T, with T{sub c} a reference temperature related to h, c, and G.

Jou, D. [Departament de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Catalonia (Spain); Mongiovi, M. S. [Dipartimento di Metodi e Modelli Matematici, Universita di Palermo, 90128 Palermo (Italy); Sciacca, M. [Dipartimento di Sistemi Agro-Ambientali, Universita di Palermo, 90128 Palermo (Italy)

2011-05-15T23:59:59.000Z

386

Urban Water Conservation along the Rio Grande  

E-Print Network (OSTI)

Not long ago, conversations on urban water demand were not only rare but dull. Today, especially in the West and Southwest, these conversations can turn into heated debates. The question of who has enough water for the future has pitted urban interests against agriculture and financial resources against cultural values. Water supply is finite, even if it is part of a cycle. Water may be plentiful in some places and scarce in others. Until we are ready to make water conservation a pattern of behavior to use less water, our demand will continue to grow as our population grows. Although water conservation is not an answer to all growth, it does offer an alternative to acquiring some new water supplies. Water conservation is almost always the least expensive water supply alternative. Water conservation can have two definitions. First and most often, conservation is considered a reduction in the amount of water used. Each person uses less. An alternative definition implies more efficient use of water. We waste less. Less waste can be attributed to best management practices, more efficient hardware or literally less water running into the streets from irrigation systems. Urban water conservation incorporates watersaving measures and incentives for the home, on the landscape and throughout the city water distribution system. It is easy to differentiate between water-saving measures and incentives. A water-saving measure such as a water-efficient toilet reduces the amount used each and every time it is flushed. Or, a rain sensor turns off a sprinkler system during rain showers. In contrast, incentives encourage the wise use of water through education, ordinances or scheduling. Educational programs suggest water reductions in the landscape, ordinances mandate how much turf is planted, and schedules tell homeowners when to irrigate. Combined, measures and incentives provide a water conservation program.

Silvey, Valeen; Kaiser, Ronald; Lesikar, Bruce; Runyan, Craig

2004-01-01T23:59:59.000Z

387

Urban household energy use in Thailand  

SciTech Connect

Changes in household fuel and electricity use that accompany urbanization in Third World countries bear large economic and environmental costs. The processes driving the fuel transition, and the policy mechanisms by which it can be influenced, need to be better understood for the sake of forecasting and planning, especially in the case of electricity demand. This study examines patterns of household fuel use and electrical appliance utilization in Bangkok, Chieng Mai and Ayutthaya, Thailand, based on the results of a household energy survey. Survey data are statistically analyzed using a variety of multiple regression techniques to evaluate the relative influence of various household and fuel characteristics on fuel and appliance choice. Results suggest that changes to the value of women's time in urban households, as women become increasingly active in the labor force, have a major influence on patterns of household energy use. The use of the home for small-scale commercial activities, particularly food preparation, also has a significant influence on fuel choice. In general, household income does not prove to be an important factor in fuel and appliance selection in these cities, although income is closely related to total electricity use. The electricity use of individual household appliances is also analyzed using statistical techniques as well as limited direct metering. The technology of appliance production in Thailand is evaluated through interviews with manufacturers and comparisons of product performance. These data are used to develop policy recommendations for improving the efficiency of electrical appliances in Thailand by relying principally on the dynamism of the consumer goods market, rather than direct regulation. The annual electricity savings from the recommended program for fostering rapid adoption of efficient technologies are estimated to reach 1800 GWh by the year 2005 for urban households alone.

Tyler, S.R.

1992-01-01T23:59:59.000Z

388

Modeling Suburban and Rural-Residential Development Beyond the Urban Fringe  

E-Print Network (OSTI)

Impacts on Agriculture and Rural Land. Agricultural2003. Biodiversity across a Rural Land-Use Gradient. Managing Urban Growth at the Rural-Urban Fringe: A Parcel-

Newburn, David A.; Berck, Peter

2006-01-01T23:59:59.000Z

389

Urban Policies and Earthquake Risk Mitigation  

SciTech Connect

The paper aims at proposing some considerations about some recent experiences of research carried out on the theme of earthquake risk mitigation and combining policies and actions of mitigation with urban development strategies. The objective was to go beyond the classical methodological approach aiming at defining a 'technical' evaluation of the earthquake risk through a procedure which can correlate the three 'components' of danger, exposure and vulnerability. These researches experiment, in terms of methodology and application, with a new category of interpretation and strategy: the so-called Struttura Urbana Minima (Minimum urban structure).Actually, the introduction of the Struttura Urbana Minima establishes a different approach towards the theme of safety in the field of earthquake risk, since it leads to a wider viewpoint, combining the building aspect of the issue with the purely urban one, involving not only town planning, but also social and managerial implications.In this sense the constituent logic of these researches is strengthened by two fundamental issues:- The social awareness of earthquake;- The inclusion of mitigation policies in the ordinary strategies for town and territory management. Three main aspects of the first point, that is of the 'social awareness of earthquake', characterize this issue and demand to be considered within a prevention policy:- The central role of the risk as a social production,- The central role of the local community consent,- The central role of the local community capability to planTherefore, consent, considered not only as acceptance, but above all as participation in the elaboration and implementation of choices, plays a crucial role in the wider issue of prevention policies.As far as the second point is concerned, the inclusion of preventive mitigation policies in ordinary strategies for the town and territory management demands the identification of criteria of choice and priorities of intervention and, as a consequence, the opportunity to promote an approach to the theme of mitigation policies realized through strategic principles and systemic logics able to shift the problem from the building to the town. The critical aspects of this theme are tied to three main issues:- The sharing of the way of interpreting town planning,- The integration of multiple objectives in one intervention tool,- The measures which can be adopted for an effective prevention policy.The above-mentioned elements have inspired these researches experimented on Calabrian towns.In particular, in this paper the experience carried out on Reggio Calabria is proposed. Its cultural roots derive from the principles and criteria experimented in small Calabrian towns, but it modifies them according to the complexity of the urban settlement, introducing also some experimental concepts and methodological approaches.

Sarlo, Antonella [Department of Architecture and Analysis of Mediterranean City Mediterranea University, via Melissari-Feo di Vito, 89124 Reggio Calabria (Italy)

2008-07-08T23:59:59.000Z

390

Ultralight Stainless Steel Urban Bus Concept  

DOE Green Energy (OSTI)

While stainless steel buses are certainly not new, this study reveals opportunities for substantial improvements in structural performance.The objective of this project was to investigate the mass saving potential of ultra-high strength stainless steel as applied to the structure of a full size urban transit bus.The resulting design for a low floor,hybrid bus has an empty weight less than half that of a conventional transit bus.The reduced curb weight allows for a greater payload,without exceeding legal axle limits. A combination of finite element modeling and dynamic testing of scale models was used to predict structural performance.

J. Bruce Emmons; Leonard J. Blessing

2001-05-14T23:59:59.000Z

391

Climatology of Chicago Area Urban-Rural Differences in Humidity  

Science Conference Proceedings (OSTI)

Hourly measurements at an urban airport and at a rural laboratory have been used in a study of Chicago area urban-rural humidity differences. Although the relative humidity was usually lower in the city than in the country, largely a consequence ...

Bernice Ackerman

1987-03-01T23:59:59.000Z

392

Modelling the upgrade of an urban waste disposal system  

Science Conference Proceedings (OSTI)

The waste intermodal station of Clyde, in the city of Sydney, Australia, is in the heart of a complex network of terminals connected by road and rail to transport urban waste from its first collection to its final disposal. The amount of waste the network ... Keywords: Discrete-event simulation, Intermodal transfer, Satellite stations, Urban solid waste, Waste collection

G. Guariso; F. Michetti; F. Porta; S. Moore

2009-11-01T23:59:59.000Z

393

Modeling heavy metal mass releases from urban battery litter  

Science Conference Proceedings (OSTI)

Consumer batteries littered on urban pavements release metals of environmental significance (Ag, Cd, Cr, Cu, Hg, Li, Mn, Ni, Pd, Ti, Zn) to stormwater runoff. Predicting the mass loading of any one metal is difficult because of the random composition ... Keywords: Heavy metals, filtered Poisson process, Mass loading, zinc, Stormwater contamination, Urban battery litter

Caleb Krouse; Aaron A. Jennings; Dario Gasparini

2009-04-01T23:59:59.000Z

394

The Shear Layer above and in Urban Canopies  

Science Conference Proceedings (OSTI)

The nature and role of the shear layer, which occurs at the level of the average building height in urban canopies, are poorly understood. Velocity data are analyzed to determine the characteristics of the shear layer of the urban canopy, defined ...

Pablo Huq; Louis A. White; Alejandro Carrillo; Jose Redondo; Seshu Dharmavaram; Steven R. Hanna

2007-03-01T23:59:59.000Z

395

The city at hand: media installations as urban information systems  

Science Conference Proceedings (OSTI)

This paper describes an approach to design a novel system for presenting data related to a city in an intuitive and metaphorical way. By using interactive surfaces and the coupling of information with graspable physical objects, urban data, maps and ... Keywords: HCI, collaboration, interaction design, maps, multimedia, paper-pen metaphor, presentation system, tangible interface, tangible interfaces, urban information system

Roland Haring; Hideaki Ogawa; Christopher Lindinger; Horst Hrtner; Shervin Afshar; David Stolarsky

2010-10-01T23:59:59.000Z

396

Turbulent Kinetic Energy in the Oklahoma City Urban Environment  

DOE Green Energy (OSTI)

A major field experiment, Joint URBAN 2003 (JU2003), was conducted in Oklahoma City in July 2003 to collect meteorological and tracer data sets for evaluating dispersion models in urban areas. The Department of Homeland Security and the Defense Threat Reduction Agency were the primary sponsors of JU2003. Investigators from five Department of Energy national laboratories, several other government agencies, universities, private companies, and international agencies conducted the experiment. Observations to characterize the meteorology in and around the urban area complemented the observation of the dispersion of SF6, an inert tracer gas. Over one hundred threedimensional sonic anemometers were deployed in and around the urban area to monitor wind speed, direction, and turbulence fluxes during releases of SF6. Sonic deployment locations included a profile of eight sonic anemometers mounted on a crane less than 1 km north of the central business district (CBD). Using data from these and other sonic anemometers deployed in the urban area, we can quantify the effect of the urban area on atmospheric turbulence and compare results seen in OKC to those in other urban areas to assess the parameters typically used in parameterizations of urban turbulence.

Lundquist, J; Leach, M; Gouveia, F

2004-06-24T23:59:59.000Z

397

The temporal evolution of coronal loops observed by GOES-SXI  

E-Print Network (OSTI)

We study the temporal evolution of coronal loops using data from the Solar X-ray Imager (SXI) on board of GOES-12. This instrument allows us to follow in detail the full lifetime of coronal loops. The observed light curves suggest three somewhat distinct evolutionary phases: rise, main, and decay. The durations and characteristic timescales of these phases are much longer than a cooling time and indicate that the loop-averaged heating rate increases slowly, reaches a maintenance level, and then decreases slowly. This suggests that a single heating mechanism operates for the entire lifetime of the loop. For monolithic loops, the loop-averaged heating rate is the intrinsic energy release rate of the heating mechanism. For loops that are bundles of impulsively heated strands, it is an indication of the frequency of occurrence of individual heating events, or nanoflares. We show that the timescale of the loop-averaged heating rate is proportional to the timescale of the observed intensity variation. The ratios of the radiative to conductive cooling times in the loops are somewhat less than 1, putting them intermediate between the values measured previously for hotter and cooler loops. Our results provide further support for the existence of a trend suggesting that all loops are heated by the same mechanism, or that different mechanisms have fundamental similarities (e.g., are all impulsive or are all steady with similar rates of heating).

M. C. Lopez Fuentes; J. A. Klimchuk; C. H. Mandrini

2006-11-10T23:59:59.000Z

398

SunShot Initiative: Heliostat System with Wireless Closed-Loop Control  

NLE Websites -- All DOE Office Websites (Extended Search)

Heliostat System with Wireless Heliostat System with Wireless Closed-Loop Control to someone by E-mail Share SunShot Initiative: Heliostat System with Wireless Closed-Loop Control on Facebook Tweet about SunShot Initiative: Heliostat System with Wireless Closed-Loop Control on Twitter Bookmark SunShot Initiative: Heliostat System with Wireless Closed-Loop Control on Google Bookmark SunShot Initiative: Heliostat System with Wireless Closed-Loop Control on Delicious Rank SunShot Initiative: Heliostat System with Wireless Closed-Loop Control on Digg Find More places to share SunShot Initiative: Heliostat System with Wireless Closed-Loop Control on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload

399

Improving Building Performance at Urban Scale with a Framework for  

NLE Websites -- All DOE Office Websites (Extended Search)

Building Performance at Urban Scale with a Framework for Building Performance at Urban Scale with a Framework for Real-time Data Sharing Title Improving Building Performance at Urban Scale with a Framework for Real-time Data Sharing Publication Type Conference Proceedings LBNL Report Number LBNL-6303E Year of Publication 2013 Authors Pang, Xiufeng, Tianzhen Hong, and Mary Ann Piette Date Published 05/2013 Keywords building performance, energy efficiency, energy modeling, optimal operation, urban scale. Abstract This paper describes work in progress toward an urban-scale system aiming to reduce energy use in neighboring buildings by providing three components: a database for accessing past and present weather data from high quality weather stations; a network for communicating energy-saving strategies between building owners; and a set of modeling tools for real-time building energy simulation.

400

Brazil-Promoting Low Emission Urban Development Strategies in Emerging  

Open Energy Info (EERE)

Brazil-Promoting Low Emission Urban Development Strategies in Emerging Brazil-Promoting Low Emission Urban Development Strategies in Emerging Economy Countries (URBAN-LEDS) Jump to: navigation, search Name Brazil-Promoting Low Emission Urban Development Strategies in Emerging Economy Countries (URBAN-LEDS) Agency/Company /Organization ICLEI - Local Governments for Sustainability, European Commission, UN Habitat Sector Climate, Energy Focus Area Renewable Energy, Buildings, Buildings - Commercial, Buildings - Residential, People and Policy Topics Adaptation, Background analysis, Baseline projection, Low emission development planning, -LEDS, Market analysis, Pathways analysis, Policies/deployment programs Website http://www.iclei.org/fileadmin Program Start 2012 Program End 2015 Country Brazil South America References UN-Habitat and European Commission sign major agreement on lower-emission city growth; ICLEI as main implementing partner[1]

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

India-Promoting Low Emission Urban Development Strategies in Emerging  

Open Energy Info (EERE)

India-Promoting Low Emission Urban Development Strategies in Emerging India-Promoting Low Emission Urban Development Strategies in Emerging Economy Countries (URBAN-LEDS) Jump to: navigation, search Name India-Promoting Low Emission Urban Development Strategies in Emerging Economy Countries (URBAN-LEDS) Agency/Company /Organization ICLEI - Local Governments for Sustainability, European Commission, UN Habitat Sector Climate, Energy Focus Area Renewable Energy, Buildings, Buildings - Commercial, Buildings - Residential, People and Policy Topics Adaptation, Background analysis, Baseline projection, Low emission development planning, -LEDS, Market analysis, Pathways analysis, Policies/deployment programs Website http://www.iclei.org/fileadmin Program Start 2012 Program End 2015 Country India Southern Asia References UN-Habitat and European Commission sign major agreement on lower-emission city growth; ICLEI as main implementing partner[1]

402

Energy Department Announces the SUN Project, Empowering Urban Native Youth  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Department Announces the SUN Project, Empowering Urban Energy Department Announces the SUN Project, Empowering Urban Native Youth in STEM Education Energy Department Announces the SUN Project, Empowering Urban Native Youth in STEM Education November 13, 2013 - 4:50pm Addthis Energy Department Announces the SUN Project, Empowering Urban Native Youth in STEM Education Andre H. Sayles, Ph.D. Andre H. Sayles, Ph.D. Principal Deputy Director of the Office of Economic Impact and Diversity and Acting Deputy Director of the Office of Minority Business and Economic Development Recently, I had the honor of announcing the launch of the SUN Project, a collaboration between the U.S. Department of Energy and the American Indian Science and Engineering Society to engage urban Native American youth in science, technology, engineering, and mathematics (STEM) fields.

403

September 18, 2012, Webinar: Wind Energy in Urban Environments | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

September 18, 2012, Webinar: Wind Energy in Urban Environments September 18, 2012, Webinar: Wind Energy in Urban Environments September 18, 2012, Webinar: Wind Energy in Urban Environments This webinar was held September 18, 2012, and provided information on wind energy installations in Boston Harbor in Hull, Massachusetts, and near downtown Milwaukee, Wisconsin. Download the presentations below, watch the webinar (WMV 128 MB), or read the text version. Find more CommRE webinars. Lessons Learned: Milwaukee's Wind Turbine Project This presentation provided information on the A-to-Z basics for constructing a wind turbine in an urban environment as well as the lessons learned. The City of Milwaukee, Wisconsin, found that information and transparency were two key items that helped win over local officials and the public when planning their 100-kilowatt urban wind project. Learn more

404

Indonesia-Promoting Low Emission Urban Development Strategies in Emerging  

Open Energy Info (EERE)

Promoting Low Emission Urban Development Strategies in Emerging Promoting Low Emission Urban Development Strategies in Emerging Economy Countries (URBAN-LEDS) Jump to: navigation, search Name Indonesia-Promoting Low Emission Urban Development Strategies in Emerging Economy Countries (URBAN-LEDS) Agency/Company /Organization ICLEI - Local Governments for Sustainability, European Commission, UN Habitat Sector Climate, Energy Focus Area Renewable Energy, Buildings, Buildings - Commercial, Buildings - Residential, People and Policy Topics Adaptation, Background analysis, Baseline projection, Low emission development planning, -LEDS, Market analysis, Pathways analysis, Policies/deployment programs Website http://www.iclei.org/fileadmin Program Start 2012 Program End 2015 Country Indonesia South-Eastern Asia References UN-Habitat and European Commission sign major agreement on lower-emission city growth; ICLEI as main implementing partner[1]

405

Property:PotentialUrbanUtilityScalePVGeneration | Open Energy Information  

Open Energy Info (EERE)

PotentialUrbanUtilityScalePVGeneration PotentialUrbanUtilityScalePVGeneration Jump to: navigation, search Property Name PotentialUrbanUtilityScalePVGeneration Property Type Quantity Description The estimated potential energy generation from utility-scale PV in urban areas of a particular place. Use this type to express a quantity of energy. The default unit for energy on OpenEI is the Kilowatt hour (kWh), which is 3,600,000 Joules. http://en.wikipedia.org/wiki/Unit_of_energy It's possible types are Watt hours - 1000 Wh, Watt hour, Watthour Kilowatt hours - 1 kWh, Kilowatt hour, Kilowatthour Megawatt hours - 0.001 MWh, Megawatt hour, Megawatthour Gigawatt hours - 0.000001 GWh, Gigawatt hour, Gigawatthour Joules - 3600000 J, Joules, joules Pages using the property "PotentialUrbanUtilityScalePVGeneration"

406

Energy Department Announces the SUN Project, Empowering Urban Native Youth  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Department Announces the SUN Project, Empowering Urban Energy Department Announces the SUN Project, Empowering Urban Native Youth in STEM Education Energy Department Announces the SUN Project, Empowering Urban Native Youth in STEM Education November 13, 2013 - 4:50pm Addthis Energy Department Announces the SUN Project, Empowering Urban Native Youth in STEM Education Andre H. Sayles, Ph.D. Andre H. Sayles, Ph.D. Principal Deputy Director of the Office of Economic Impact and Diversity and Acting Deputy Director of the Office of Minority Business and Economic Development Recently, I had the honor of announcing the launch of the SUN Project, a collaboration between the U.S. Department of Energy and the American Indian Science and Engineering Society to engage urban Native American youth in science, technology, engineering, and mathematics (STEM) fields.

407

Urban Enterprise Zone Program (New Jersey) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Urban Enterprise Zone Program (New Jersey) Urban Enterprise Zone Program (New Jersey) Urban Enterprise Zone Program (New Jersey) < Back Eligibility Commercial Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State New Jersey Program Type Enterprise Zone New Jersey's Urban Enterprise (UEZ) Program operates under the Department of Community Affairs. The UEZ Program exists to foster an economic climate that revitalizes designated urban communities and stimulates their growth by encouraging businesses to develop and create private sector jobs through public and private investment. Applicant businesses must be registered, located in one of the designated zones, be in tax compliance with the state, and certified by the Program.

408

Performance of a Treatment Loop for Recycling Spent Rinse Waters  

Science Conference Proceedings (OSTI)

This paper summarizes an evaluation of a treatment loop designed to upgrade the quality of spent rinse waters discharged from 10 wet benches located in the fab at Sandia's Microelectronics Development Laboratory (MDL). The goal of the treatment loop is to make these waters, presently being discharged to the fab's acid waste neutralization (AWN) station, suitable for recycling as feed water back into the fab's ultrapure water (UPW) plant. The MDL typically operates 2 shifts per day, 5 days per week. Without any treatment, the properties of the spent rinse waters now being collected have been shown to be compatible with recycling about 30% (50/168) of the time (weekends primarily, when the fab is idling) which corresponds to about 12% of the present water discharged from the fab to the AWN. The primary goal of adding a treatment loop is to increase the percentage of recyclable water from these 10 wet benches to near 100%, increasing the percentage of total recyclable water to near 40% of the total present fab discharge to the AWN. A second goal is to demonstrate compatibility with recycling this treated spent rinse water to the present R/O product water tank, reducing both the present volume of R/O reject water and the present load on the R/O. The approach taken to demonstrate achieving these goals is to compare all the common metrics of water quality for the treated spent rinse waters with those of the present R/O product water. Showing that the treated rinse water is equal or superior in quality to the water presently stored in the R/O tank by every metric all the time is assumed to be sufficient argument for proceeding with plans to incorporate recycling of these spent rinse waters back into MDL's R/O tank.

DONOVAN,ROBERT PATRICK; TIMON,ROBERT P.; DEBUSK,MICHAEL JOHN; JONES,RONALD V.; ROGERS,DARELL M.

2000-11-15T23:59:59.000Z

409

One Loop Effects in Various Dimensions and D-Branes  

E-Print Network (OSTI)

We calculate some one loop corrections to the effective action of theories in $d$ dimensions that arise on the dimensional reduction of a Weyl fermion in $D$ dimensions. The terms that we are interested in are of a topological nature. Special attention is given to the effective actions of the super Yang Mills theories that arise on dimensional reduction of the N=1 theory in six dimensions or on the dimensional reduction of the N=1 theory in ten dimensions. In the latter case we suggest an interpretation of the quantum effect as a coupling of the gauge field on the brane to a relative background gauge field.

Chaouki Boulahouache; George Thompson

1998-01-13T23:59:59.000Z

410

System having unmodulated flux locked loop for measuring magnetic fields  

DOE Patents (OSTI)

A system (10) for measuring magnetic fields, wherein the system (10) comprises an unmodulated or direct-feedback flux locked loop (12) connected by first and second unbalanced RF coaxial transmission lines (16a, 16b) to a superconducting quantum interference device (14). The FLL (12) operates for the most part in a room-temperature or non-cryogenic environment, while the SQUID (14) operates in a cryogenic environment, with the first and second lines (16a, 16b) extending between these two operating environments.

Ganther, Jr., Kenneth R. (Olathe, KS); Snapp, Lowell D. (Blue Springs, MO)

2006-08-15T23:59:59.000Z

411

Closed loop air cooling system for combustion turbines  

DOE Patents (OSTI)

Convective cooling of turbine hot parts using a closed loop system is disclosed. Preferably, the present invention is applied to cooling the hot parts of combustion turbine power plants, and the cooling provided permits an increase in the inlet temperature and the concomitant benefits of increased efficiency and output. In preferred embodiments, methods and apparatus are disclosed wherein air is removed from the combustion turbine compressor and delivered to passages internal to one or more of a combustor and turbine hot parts. The air cools the combustor and turbine hot parts via convection and heat is transferred through the surfaces of the combustor and turbine hot parts. 1 fig.

Huber, D.J.; Briesch, M.S.

1998-07-21T23:59:59.000Z

412

Open-loop Band excitation Kelvin Probe Force Microscopy  

Science Conference Proceedings (OSTI)

A multidimensional scanning probe microscopy approach for quantitative, cross-talk free mapping of surface electrostatic properties is demonstrated. Open-loop band excitation Kelvin probe force microscopy (OL BE KPFM) probes the full response-frequency-potential surface at each pixel at standard imaging rates. The subsequent analysis reconstructs work function, tip surface capacitance gradient and resonant frequency maps, obviating feedback-related artifacts. OL BE KPFM imaging is demonstrated for several materials systems with topographic, potential and combined contrast. This approach combines the features of both frequency and amplitude KPFM and allows complete decoupling of topographic and voltage contributions to the KPFM signal.

Guo, Senli [ORNL; Kalinin, Sergei V [ORNL; Jesse, Stephen [ORNL

2012-01-01T23:59:59.000Z

413

Loop Quantum Theory Applied to Biology and Nonlinear Whole Biology  

E-Print Network (OSTI)

The loop quantum theory, which constitutes a very small discontinuous space, as new method is applied to biology. The model of protein folding and lungs is proposed. In the model, some known results are used, and four approximate conclusions are obtained: their structures are quantized, their space regions are finite, various singularities correspond to folding and crossed points, and different types of catastrophe exist. Further, based on the inseparability and correlativity of the biological systems, the nonlinear whole biology is proposed, and four basic hypotheses are formed. It may unify reductionism and holism, structuralism and functionalism. Finally, the medical meaning of the theory is discussed briefly.

Yi-Fang Chang

2008-01-02T23:59:59.000Z

414

DOE/NETL ADVANCED COMBUSTION SYSTEMS: CHEMICAL LOOPING SUMMARY  

NLE Websites -- All DOE Office Websites (Extended Search)

COMBUSTION SYSTEMS: CHEMICAL LOOPING SUMMARY JULY 2013 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal li- ability or responsibility for the accuracy, completeness, or useful- ness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommenda-

415

Closed loop air cooling system for combustion turbines  

DOE Patents (OSTI)

Convective cooling of turbine hot parts using a closed loop system is disclosed. Preferably, the present invention is applied to cooling the hot parts of combustion turbine power plants, and the cooling provided permits an increase in the inlet temperature and the concomitant benefits of increased efficiency and output. In preferred embodiments, methods and apparatus are disclosed wherein air is removed from the combustion turbine compressor and delivered to passages internal to one or more of a combustor and turbine hot parts. The air cools the combustor and turbine hot parts via convection and heat is transferred through the surfaces of the combustor and turbine hot parts.

Huber, David John (North Canton, OH); Briesch, Michael Scot (Orlando, FL)

1998-01-01T23:59:59.000Z

416

Geothermal Loop Experimental Facility. Quarterly report, January-March, 1979  

DOE Green Energy (OSTI)

The general operations and accomplishments of the Geothermal Loop Experimental Facility during the period from January 1, 1979 through March 31, 1979 are summarized. The construction and installation of a reactor clarifier/media filter system to treat the effluent brine continued. Startup is expected during the next reporting period. Operations of the facility evaluated the two stage flash cycle characteristics of brines from the second production well (Woolsey No. 1). The results were similar to the characteristics of the first production well (Magmamax No. 1) that were reported previously. The 1979 test program has been initiated and preliminary results documented.

Anastas, G.; Bischoff, W.S.; Bishop, H.K.

1979-04-01T23:59:59.000Z

417

Water Conservation with Urban Landscape Plants  

E-Print Network (OSTI)

Water shortages are a common problem in much of the southwest. Increasing urbanization and increasing population places greater demands on dwindling water supplies. Over half of the water used in urban areas of the southwest is used in the irrigation of landscapes. To help cope with increased urban water demands and low water supplies, research was conducted from March 1981 to July 1983 at The Texas Agricultural Experiment Station at Dallas to gain information relative to consumptive water use by native and non-native landscape plants. Twenty weighing lysimeters were constructed and installed and plants established in the lysimeters and adjacent areas. The lysimeters were made from 0.6 X 0.9 m undisturbed cores of Austin silty clay soil. Plants used in the lysimeter study were buffalograss, St. Augustine grass, cenizo, boxwood and Texas barberry. All plants are native to Texas except boxwood and St. Augustine grass. Four lysimeters were planted to each plant type. This allowed two moisture levels and two replications of each plant type. There was no difference in water use by St. Augustine grass and buffalo grass during the year of establishment. Daily water use ranged from 0.49 to 0.08 cm per day but was generally 50% class A pan evaporation. St. Augustine grass used 0.03 cm/day more water than buffalo grass during 1982. -Irrigation treatments used in 1982 did not influence water use by either grass type but buffalo grass retained higher quality under dry treatment (irrigated at 0.40 bar moisture tension) than St. Augustine grass. Water use from May to July 1983 was highest (of all treatments) by St. Augustine grass when irrigated at 0.25 bar soil moisture tension at 76 cm depth and lowest (of all treatments) by buffalograss when irrigated at 0.75 bar soil moisture tension at 76 cm depth. Application of 50% class A pan evaporation each week appears to be an acceptable guideline for irrigation of either turfgrass but research should be conducted over a longer time period to obtain more specific guidelines for each grass species. Water use by shrubs in lysimeters was variable and not influenced by plant type during the period of establishment (Fall 1981). During 1982 water use was influenced more by plant size than by specie or water level. Cenizo had much faster growth rate than the other shrubs in the study. Water use by container grown plants indicated that cenizo had higher water use efficiency than boxwood or Indian Hawthorn. Water use was determined for several native shrubs and of the ones compared, Texas barberry appeared to have the most promise for use in water conserving landscapes.

Hip, B. W.; Giordano, C.; Simpson, B.

1983-08-01T23:59:59.000Z

418

Urban Form Energy Use and Emissions in China: Preliminary Findings and Model Proof of Concept  

E-Print Network (OSTI)

urban form level the World Bank's Energy Sector Managementbees/. World Bank (ESMAP). 2009. " Energy Efficient Cities

Aden, Nathaniel

2011-01-01T23:59:59.000Z

419

A deterministic air quality forecasting system for Torino urban area, Italy  

Science Conference Proceedings (OSTI)

An urban air quality forecasting system for Torino city has been developed, within the EU funded project FUMAPEX, to support the prevention and management of urban air pollution episodes. The proposed forecasting system is designed to provide stakeholders ... Keywords: Air quality forecasting, Air quality management, Chemical transport models, Urban air pollution, Urban meteorology

S. Finardi; R. De Maria; A. D'Allura; C. Cascone; G. Calori; F. Lollobrigida

2008-03-01T23:59:59.000Z

420

An Overview of the Urban Boundary Layer Atmosphere Network in Helsinki  

Science Conference Proceedings (OSTI)

The Helsinki Urban Boundary-Layer Atmosphere Network (UrBAN: http://urban.fmi.fi) is a dedicated research-grade observational network where the physical processes in the atmosphere above the city are studied. Helsinki UrBAN is the most poleward intensive ...

C. R. Wood; L. Jrvi; R. D. Kouznetsov; A. Nordbo; S. Joffre; A. Drebs; T. Vihma; A. Hirsikko; I. Suomi; C. Fortelius; E. O'Connor; D. Moiseev; S. Haapanala; J. Moilanen; M. Kangas; A. Karppinen; T. Vesala; J. Kukkonen

2013-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Future Urban Transport, Berkeley, 19-21 May 2008 International Comparative Study  

E-Print Network (OSTI)

Future Urban Transport, Berkeley, 19-21 May 2008 International Comparative Study of Mega Transport Director of OMEGA Centre University College London Conference on Future Urban Transport Berkeley Center for Future Urban Transport May 19-21, 2008 #12;Future Urban Transport, Berkeley, 19-21 May 2008 Overall

California at Berkeley, University of

422

Urban Ecosystems, 7: 175178, 2004 c 2004 Kluwer Academic Publishers. Manufactured in The Netherlands.  

E-Print Network (OSTI)

, and ecosystem function in the urban fringe. Nassauer, Allan, Johengan, Kosek, and Infante examine how

Wu, Jianguo "Jingle"

423

Global Cooling: Effect of Urban Albedo on Global Temperature  

SciTech Connect

In many urban areas, pavements and roofs constitute over 60% of urban surfaces (roof 20-25%, pavements about 40%). The roof and the pavement albedo can be increased by about 0.25 and 0.10, respectively, resulting in a net albedo increase for urban areas of about 0.1. Many studies have demonstrated building cooling-energy savings in excess of 20% upon raising roof reflectivity from an existing 10-20% to about 60%. We estimate U.S. potential savings in excess of $1 billion (B) per year in net annual energy bills. Increasing albedo of urban surfaces can reduce the summertime urban temperature and improve the urban air quality. Increasing the urban albedo has the added benefit of reflecting more of the incoming global solar radiation and countering the effect of global warming. We estimate that increasing albedo of urban areas by 0.1 results in an increase of 3 x 10{sup -4} in Earth albedo. Using a simple global model, the change in air temperature in lowest 1.8 km of the atmosphere is estimated at 0.01K. Modelers predict a warming of about 3K in the next 60 years (0.05K/year). Change of 0.1 in urban albedo will result in 0.01K global cooling, a delay of {approx}0.2 years in global warming. This 0.2 years delay in global warming is equivalent to 10 Gt reduction in CO2 emissions.

Akbari, Hashem; Menon, Surabi; Rosenfeld, Arthur

2007-05-22T23:59:59.000Z

424

PHARMACOGNOSTIC STUDIES ON CENTELLA ASIATICA (L) URBAN  

E-Print Network (OSTI)

ABSTRACT: The paper deals with pharmacognosy of Centella asiatica (L.) Urban, including its morphological, anatomical, chemical constituents and powder analysis. Stomata are mostly anisotricytic, isotricytic and few tetracytic. Sphaero-crystals of calcium oxalate are observed in palisade, spongy and ground parenchyma of leaf lamina, petiole and rhizome and absent in roots. Uniseriate flagellate conical hairs present only on abaxial surface of leaf and all over the petiole. The venation is palmatous actinodromous with six primary veins. Midrib consists of a single vascular bundle while petiole consists of 7 8, rhizome with numerous bundles are observed and root consists of tetrarch vascular bundle. Powder microscopically show fragment of epidermis, mesophyll, sphaero-crystals, trichomes, collenchyma and parenchyma of leaf, petiole, rhizome and root. Tracheary elements show annular helical and pitted types.

S. Jelani; F. Jabeen; M. Prabhakar; P. Leelavathi

1992-01-01T23:59:59.000Z

425

Two-Loop Bethe Logarithms for Higher Excited S Levels  

E-Print Network (OSTI)

Processes mediated by two virtual low-energy photons contribute quite significantly to the energy of hydrogenic S states. The corresponding level shift is of the order of (alpha/pi)^2 (Zalpha)^6 m_e c^2 and may be ascribed to a two-loop generalization of the Bethe logarithm. For 1S and 2S states, the correction has recently been evaluated by Pachucki and Jentschura [Phys. Rev. Lett. vol. 91, 113005 (2003)]. Here, we generalize the approach to higher excited S states, which in contrast to the 1S and 2S states can decay to P states via the electric-dipole (E1) channel. The more complex structure of the excited-state wave functions and the necessity to subtract P-state poles lead to additional calculational problems. In addition to the calculation of the excited-state two-loop energy shift, we investigate the ambiguity in the energy level definition due to squared decay rates.

Ulrich D. Jentschura

2004-09-23T23:59:59.000Z

426

Testing Loop Quantum Gravity and Electromagnetic Dark Energy in Superconductors  

E-Print Network (OSTI)

In 1989 Cabrera and Tate reported an anomalous excess of mass of the Cooper pairs in rotating thin Niobium rings. So far, this experimental result never received a proper theoretical explanation in the context of superconductor's physics. In the present work we argue that what Cabrera and Tate interpreted as an anomalous excess of mass can also be associated with a deviation from the classical gravitomagnetic Larmor theorem due to the presence of dark energy in the superconductor, as well as with the discrete structure of the area of the superconducting Niobium ring as predicted by Loop Quantum Gravity. From Cabrera and Tate measurements we deduce that the quantization of spacetime in superconducting circular rings occurs at the Planck-Einstein scale $l_{PE} = (\\hbar G/c^3 \\Lambda)^{1/4}\\sim 3.77\\times 10 ^{-5} m$, instead of the Planck scale $l_{P} =(\\hbar G / c^3)^{1/2}=1.61 \\times 10 ^{-35} m$, with an Immirzi parameter which depends on the specific critical temperature of the superconducting material and on the area of the ring. The stephan-Boltzmann law for quantized areas delimited by superconducting rings is predicted, and an experimental concept based on the electromagnetic black-body radiation emitted by this surfaces, is proposed to test loop quantum gravity and electromagnetic dark energy in superconductors.

Clovis Jacinto de Matos

2008-12-30T23:59:59.000Z

427

Supervisory control of a pilot-scale cooling loop  

SciTech Connect

We combine a previously developed strategy for Fault Detection and Identification (FDI) with a supervisory controller in closed loop. The combined method is applied to a model of a pilot-scale cooling loop of a nuclear plant, which includes Kalman filters and a model-based predictive controller as part of normal operation. The system has two valves available for flow control meaning that some redundancy is available. The FDI method is based on likelihood ratios for different fault scenarios which in turn are derived from the application of the Kalman filter. A previously introduced extension of the FDI method is used here to enable detection and identification of non-linear faults like stuck valve problems and proper accounting of the time of fault introduction. The supervisory control system is designed so to take different kinds of actions depending on the status of the fault diagnosis task and on the type of identified fault once diagnosis is complete. Some faults, like sensor bias and drift, are parametric in nature and can be adjusted without need for reconfiguration of the regulatory control system. Other faults, like a stuck valve problem, require reconfiguration of the regulatory control system. The whole strategy is demonstrated for several scenarios.

Kris Villez; Venkat Venkatasubramanian; Humberto Garcia

2011-08-01T23:59:59.000Z

428

A New Multilevel Method for Electrostatic Problems through Hierarchical Loop Basis  

E-Print Network (OSTI)

We present a new multilevel method for calculating Poisson's equation, which often arises form electrostatic problems, by using hierarchical loop bases. This method, termed hierarchical Loop basis Poisson Solver (hieLPS), extends previous Poisson solver through loop-tree basis to a multilevel mesh. In this method, Poisson's equation is solved by a two-step procedure: First, the electric flux is found by using loop-tree basis based on Helmholtz decomposition of field; Second, the potential distribution is solved rapidly with a fast solution of O(N) complexity. Among the solution procedures, finding the loop part of electric flux is the most critical part and dominates the computational effort. To expedite this part's convergent speed, we propose to use hierarchical loop bases to construct a multilevel system. As a result, the whole solution time has been noticeably reduced. Numerical examples are presented to demonstrate the efficiency of the proposed method.

Z. -H. Ma; W. C. Chew; Y. M. Wu; L. J. Jiang

2013-05-14T23:59:59.000Z

429

OBSERVATIONS OF PLASMA UPFLOW IN A WARM LOOP WITH HINODE/EIS  

Science Conference Proceedings (OSTI)

A complete understanding of Doppler shift in active region loops can help probe the basic physical mechanism involved into the heating of those loops. Here, we present observations of upflows in coronal loops detected in a range of temperatures (log T = 5.8-6.2). The loop was not discernible above these temperatures. The speed of upflow was strongest at the footpoint and decreased with height. The upflow speed at the footpoint was about 20 km s{sup -1} in Fe VIII, which decreased with temperature, being about 13 km s{sup -1} in Fe X, about 8 km s{sup -1} in Fe XII, and about 4 km s{sup -1} in Fe XIII. To the best of our knowledge, this is the first observation providing evidence of upflow of plasma in coronal loop structures at these temperatures. We interpret these observations as evidence of chromospheric evaporation in quasi-static coronal loops.

Tripathi, Durgesh [Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411 007 (India); Mason, Helen E.; Del Zanna, Giulio [Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom); Bradshaw, Steven [Department of Physics and Astronomy, Rice University, Houston, TX 77005 (United States)

2012-07-20T23:59:59.000Z

430

Advanced Control Technology Update: Multi-Loop Tuning and Model Predictive Control  

Science Conference Proceedings (OSTI)

This technical update provides information on two projects in the advanced control area. The first project is a study of control system tuning methods for multiple interacting proportional-integral-derivative PID control loops. The traditional method for tuning such systems, common on power plant boiler control systems, is to tune each loop in a specified sequence. An alternative method, in which all loops are tuned simultaneously, is being developed in this study and will be compared to the traditional ...

2008-03-30T23:59:59.000Z

431

Integrated Vehicle Thermal Management - Combining Fluid Loops in Electric Drive Vehicles (Presentation)  

SciTech Connect

Plug-in hybrid electric vehicles and electric vehicles have increased vehicle thermal management complexity, using separate coolant loop for advanced power electronics and electric motors. Additional thermal components result in higher costs. Multiple cooling loops lead to reduced range due to increased weight. Energy is required to meet thermal requirements. This presentation for the 2013 Annual Merit Review discusses integrated vehicle thermal management by combining fluid loops in electric drive vehicles.

Rugh, J. P.

2013-07-01T23:59:59.000Z

432

OPTIMIZED CONTROL STRATEGIES FOR A TYPICAL WATER LOOP HEAT PUMP SYSTEM.  

E-Print Network (OSTI)

??Water Loop Heat Pump (WLHP) System has been widely utilized in the Heating, Ventilating and Air Conditioning (HVAC) industry for several decades. There is no (more)

Lian, Xu

2011-01-01T23:59:59.000Z

433

Three loop MSbar transversity operator anomalous dimensions for fixed moment n <= 8  

E-Print Network (OSTI)

We compute the anomalous dimensions of the transversity operator at three loops in the MSbar scheme for fixed moment n where n n <= 7.

J. A. Gracey

2006-11-07T23:59:59.000Z

434

Scaling of Hybrid Electric Vehicle Powertrain Components for Hardware-in-the-Loop Simulation.  

E-Print Network (OSTI)

??Hardware in the loop (HIL) simulation enables experimental study of prototype hardware systems or control algorithms via real-time interaction between physical hardware and virtual simulations. (more)

Petersheim, Michael

2008-01-01T23:59:59.000Z

435

Conceptual Design for a High-Temperature Gas Loop Test Facility  

SciTech Connect

This report documents an early-stage conceptual design for a high-temperature gas test loop. The objectives accomplished by the study include, (1) investigation of existing gas test loops to determine ther capabilities and how the proposed system might best complement them, (2) development of a preliminary test plan to help identify the performance characteristics required of the test unit, (3) development of test loop requirements, (4) development of a conceptual design including process flow sheet, mechanical layout, and equipment specifications and costs, and (5) development of a preliminary test loop safety plan.

James B. Kesseli

2006-08-01T23:59:59.000Z

436

A steady state analysis code for prediction of behavior in loop heat pipes.  

E-Print Network (OSTI)

??The purpose of this work is to prepare an analysis raphics. code for the prediction of Loop Heat Pipe (LHP) behavior in steady-state operation. The (more)

Hamm, Trenton Allen

2012-01-01T23:59:59.000Z

437

An Urban Parameterization for a Global Climate Model. Part II: Sensitivity to Input Parameters and the Simulated Urban Heat Island in Offline Simulations  

Science Conference Proceedings (OSTI)

In a companion paper, the authors presented a formulation and evaluation of an urban parameterization designed to represent the urban energy balance in the Community Land Model. Here the robustness of the model is tested through sensitivity ...

K. W. Oleson; G. B. Bonan; J. Feddema; M. Vertenstein

2008-04-01T23:59:59.000Z

438

Estimating the Urban Heat Island Contribution to Urban and Rural Air Temperature Differences over Complex Terrain: Application to an Arid City  

Science Conference Proceedings (OSTI)

This study proposes a method for estimating the canopy-layer net urban heat island (UHI) in regions with complex terrain that lack preurban observations. The approach is based on a linear relationship between the urbanrural temperature ...

Hadas Saaroni; Baruch Ziv

2010-10-01T23:59:59.000Z

439

Seasonal Variations of the Urban Heat Island at the Surface and the Near-Surface and Reductions due to Urban Vegetation in Mexico City  

Science Conference Proceedings (OSTI)

The contrast of vegetation cover in urban and surrounding areas modulates the magnitude of the urban heat island (UHI). This paper examines the seasonal variations of the UHI using the Moderate Resolution Imaging Spectroradiometer (MODIS), surface ...

Yu Yan Cui; Benjamin de Foy

2012-05-01T23:59:59.000Z

440

Impacts of Urban Processes and Urbanization on Summer Precipitation: A Case Study of Heavy Rainfall in Beijing on 1 August 2006  

Science Conference Proceedings (OSTI)

Finescale simulations (with 500-m grid spacing) using the Weather Research and Forecasting Model (WRF) were used to investigate impacts of urban processes and urbanization on a localized, summer, heavy rainfall in Beijing. Evaluation using radar ...

Shiguang Miao; Fei Chen; Qingchun Li; Shuiyong Fan

2011-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Estimating the Urban Bias of Surface Shelter Temperatures Using Upper-Air and Satellite Data. Part II: Estimation of the Urban Bias  

Science Conference Proceedings (OSTI)

A methodology is presented for estimating the urban bias of surface shelter temperatures due to the effect of the urban heat island. Multiple regression techniques were used to predict surface shelter temperatures based on the time period 1986?89 ...

David L. Epperson; Jerry M. Davis; Peter Bloomfield; Thomas R. Karl; Alan L. McNab; Kevin P. Gallo

1995-02-01T23:59:59.000Z

442

Integration of Lidar Data into a Coupled MesoscaleLand Surface Model: A Theoretical Assessment of Sensitivity of UrbanCoastal Mesoscale Circulations to Urban Canopy Parameters  

Science Conference Proceedings (OSTI)

Urbancoastal circulations affect urban weather, dispersion and transport of pollutants and contaminants, and climate. Proper characterization and prediction of thermodynamic and dynamic processes in such environments are warranted. A new ...

Michael Carter; J. Marshall Shepherd; Steve Burian; Indu Jeyachandran

2012-03-01T23:59:59.000Z

443

The Sourcebook on Sustainable Urban Transport | Open Energy Information  

Open Energy Info (EERE)

Sourcebook on Sustainable Urban Transport Sourcebook on Sustainable Urban Transport Jump to: navigation, search Tool Summary Name: The Sourcebook on Sustainable Urban Transport Agency/Company /Organization: GIZ Focus Area: Other Topics: Policy Impacts Resource Type: Reports, Journal Articles, & Tools Website: www.sutp.org/index.php?option=com_content&task=view&id=426&Itemid=189& The Sourcebook addresses the key areas of a sustainable transport policy framework for developing cities. It consists of more than twenty modules addressing the following themes: institutional and policy orientation; land use planning and demand management; transit, walking, and cycling; vehicles and fuels; environment and health; and social issues in transport. References Retrieved from "http://en.openei.org/w/index.php?title=The_Sourcebook_on_Sustainable_Urban_Transport&oldid=515034"

444

Promoting Low Emission Urban Development Strategies in Emerging Economy  

Open Energy Info (EERE)

Countri (URBAN-LEDS) Countri (URBAN-LEDS) Jump to: navigation, search Name Promoting Low Emission Urban Development Strategies in Emerging Economy Countries (URBAN-LEDS) Agency/Company /Organization ICLEI - Local Governments for Sustainability, European Commission, UN Habitat Sector Climate, Energy Focus Area Renewable Energy, Buildings, Buildings - Commercial, Buildings - Residential, People and Policy Topics Adaptation, Background analysis, Baseline projection, Low emission development planning, -LEDS, Market analysis, Pathways analysis, Policies/deployment programs Website http://www.iclei.org/fileadmin Program Start 2012 Program End 2015 Country Brazil, India, Indonesia, South Africa South America, Southern Asia, South-Eastern Asia, Southern Africa References UN-Habitat and European Commission sign major agreement on lower-emission city growth; ICLEI as main implementing partner[1]

445

Infinite urban landscapes : a journey through Cambridge, Massachusetts  

E-Print Network (OSTI)

This study explores how the forms of urban landscapes influence and reflect physical and metaphorical journeys through a city. Using an interdisciplinary approach, the artist and researcher investigates the diverse landscapes ...

Brunetto, Leah B. (Leah Beth)

2012-01-01T23:59:59.000Z

446

Urban oasis : the central market redevelopment of Hong Kong  

E-Print Network (OSTI)

In the ultra-urban centers of today, "nature" has become a precious resource that often gets sacrificed in the name of progress and development. The presence of nature has become increasingly elusive in the concrete jungle ...

Kwok, Sean Zee, 1975-

2001-01-01T23:59:59.000Z

447

VELO[city] : rethinking the multi-modal urban station  

E-Print Network (OSTI)

Train travel was once integral to the urban condition. Railway stations and rural depots were designed as machines for efficiency and it was within the station that one could escape the chaos of the city to become a part ...

Dickson, Amanda, 1974-

2003-01-01T23:59:59.000Z

448

An urban infill : a residual site in Boston  

E-Print Network (OSTI)

This thesis is concerned with the treatment of residual sites in the context of the urban environment and in particular with the wounds inflicted by the passage of the Massachusetts Turnpike through the city of Boston. The ...

Savvides, Andreas L. (Andreas Loucas)

1996-01-01T23:59:59.000Z

449

Considerations in the recycling of urban parking garages  

E-Print Network (OSTI)

Because of the decreasing use of private automobiles in city centers and because of usual development pressures, some urban parking garages will become available for replacement or recycling. The choice between replacement ...

Paul, Michael Johannes

1981-01-01T23:59:59.000Z

450

Sustainable urban mobility : exploring the role of the built environment  

E-Print Network (OSTI)

This dissertation examines the concept of sustainable mobility within an urban context. In essence, the research aims to answer the question, "What role does a city's built environment play, if any, in the sustainability ...

Zegras, Pericles Christopher, 1968-

2005-01-01T23:59:59.000Z

451

Exploring urban resilience : violence and infrastructure provision in Karachi  

E-Print Network (OSTI)

The Urban Resilience and Chronic Violence project at MIT extends the scientific concept of resilience to the analysis of chronic conflict. This thesis builds upon the project by testing the usefulness of a socio-spatial ...

Raman, Prassanna

2012-01-01T23:59:59.000Z

452

Intensifying urban thresholds : building continuity for New Bedfords's waterfront  

E-Print Network (OSTI)

This thesis explores issues of urban form through an understanding of vernacular traditions in a local context. The exploration consists of looking at the characteristics of a particular place in an attempt to understand ...

Hollister, Susan Elizabeth

1994-01-01T23:59:59.000Z

453

The Network Analysis of Urban Streets: A Primal Approach  

E-Print Network (OSTI)

The network metaphor in the analysis of urban and territorial cases has a long tradition especially in transportation/land-use planning and economic geography. More recently, urban design has brought its contribution by means of the "space syntax" methodology. All these approaches, though under different terms like accessibility, proximity, integration,connectivity, cost or effort, focus on the idea that some places (or streets) are more important than others because they are more central. The study of centrality in complex systems,however, originated in other scientific areas, namely in structural sociology, well before its use in urban studies; moreover, as a structural property of the system, centrality has never been extensively investigated metrically in geographic networks as it has been topologically in a wide range of other relational networks like social, biological or technological. After two previous works on some structural properties of the dual and primal graph representations of urban street ne...

Porta, S; Latora, V; Porta, Sergio; Crucitti, Paolo; Latora, Vito

2005-01-01T23:59:59.000Z

454

Measurements of Boundary Layer Profiles in an Urban Environment  

Science Conference Proceedings (OSTI)

Boundary layer profiles of mean temperature, velocity, and small-scale turbulence from in situ sensors, Doppler lidar, sodar, and rawinsondes are intercompared for an urban environment. A new Doppler lidar algorithm is presented to produce high-...

Rod Frehlich; Yannick Meillier; Michael L. Jensen; Ben Balsley; Robert Sharman

2006-06-01T23:59:59.000Z

455

Indoor Environment and Energy Consumption of Urban Residential...  

NLE Websites -- All DOE Office Websites (Extended Search)

Indoor Environment and Energy Consumption of Urban Residential Buildings in China Speaker(s): Hiroshi Yoshino Date: September 18, 2009 - 12:00pm Location: 90-3122 In China, the...

456

Property:PotentialUrbanUtilityScalePVCapacity | Open Energy Information  

Open Energy Info (EERE)

PotentialUrbanUtilityScalePVCapacity PotentialUrbanUtilityScalePVCapacity Jump to: navigation, search Property Name PotentialUrbanUtilityScalePVCapacity Property Type Quantity Description The nameplate capacity technical potential from utility-scale PV in urban areas of a particular place. Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWATTS 0.001 GW,gigawatt,gigawatts,Gigawatt,Gigawatts,GigaWatt,GigaWatts,GIGAWATT,GIGAWATTS

457

Guidelines and Toolkits for Urban Transport Development in Medium Sized  

Open Energy Info (EERE)

Guidelines and Toolkits for Urban Transport Development in Medium Sized Guidelines and Toolkits for Urban Transport Development in Medium Sized Cities in India Jump to: navigation, search Tool Summary Name: Guidelines and Toolkits for Urban Transport Development in Medium Sized Cities in India Agency/Company /Organization: Asian Development Bank Focus Area: Governance - Planning - Decision-Making Structure Topics: Best Practices Complexity/Ease of Use: Not Available Website: sti-india-uttoolkit.adb.org/ Transport Toolkit Region(s): Asia Related Tools Promoting Clean Cars: Case Study of Stockholm and Sweden MOtor Vehicle Emission Simulator (MOVES) The World Bank - Transport ... further results Find Another Tool FIND TRANSPORTATION TOOLS This resource is designed to help decision makers and practitioners in states and municipal governments who are concerned with urban transport

458

Indonesia-GTZ Emissions Reductions in Urban Transport | Open Energy  

Open Energy Info (EERE)

Reductions in Urban Transport Reductions in Urban Transport Jump to: navigation, search Logo: Indonesia-GTZ Emissions Reductions in Urban Transport Name Indonesia-GTZ Emissions Reductions in Urban Transport Agency/Company /Organization GTZ Partner Ministry of Transportation Sector Energy Focus Area Transportation Topics Background analysis Website http://www.gtz.de/en/themen/um Program Start 2008 Program End 2012 Country Indonesia UN Region South-Eastern Asia References GTZ Transport & Climate Change Website[1] GTZ is working with Indonesia on this program with the following objective: "Indonesian cities increasingly plan and implement measures for a transport system that is energy efficient as well as environmentally and climate friendly." Background of the project is the absence of a national policy on

459

Community Renewable Energy Success Stories: Wind Energy in Urban  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stories: Wind Energy in Urban Stories: Wind Energy in Urban Environments Webinar (text version) Community Renewable Energy Success Stories: Wind Energy in Urban Environments Webinar (text version) Below is the text version of the Webinar titled "Community Renewable Energy Success Stories: Wind Energy in Urban Environments," originally presented on September 18, 2012. Sarah Busche: Good afternoon everyone and welcome to today's webinar sponsored by the U.S. Department of Energy. This is Sarah Busche and I'm here with Jimmy Jones. We're broadcasting live from the National Renewable Energy Lab in Golden, Colorado. We'll give folks a few more minutes to log on and call in but while we wait Jim is going to go over some logistics and then we'll get started with today's webinar. Jimmy?

460

Physical Modeling of Flow Field inside Urban Street Canyons  

Science Conference Proceedings (OSTI)

The flow characteristics inside urban street canyons were studied in a laboratory water channel. The approaching flow direction was horizontal and perpendicular to the street axis. The street width was adjusted to form street canyons of aspect ...

Xian-Xiang Li; Dennis Y. C. Leung; Chun-Ho Liu; K. M. Lam

2008-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Impact of Urban Effects on Precipitation in High Latitudes  

Science Conference Proceedings (OSTI)

This numerical study examines the impact of urban growth and release of aerosols, moisture, and heat on precipitation for Fairbanks, Alaska, a remote city at high latitude. The remote location allows atmospheric changes to be attributed to the ...

Nicole Mlders; Mark A. Olson

2004-06-01T23:59:59.000Z

462

Comparison of Four Methods to Estimate Urban Heat Storage  

Science Conference Proceedings (OSTI)

The relative performance of four independent methods to estimate the magnitude and diurnal behavior of net heat storage fluxes (?QS) in a city center is assessed. This heat flux is a significant but understudied component of the urban surface ...

Sarah M. Roberts; T. R. Oke; C. S. B. Grimmond; J. A. Voogt

2006-12-01T23:59:59.000Z

463

An Evaluation of Boundary Conditions for Modeling Urban Boundary Layers  

DOE Green Energy (OSTI)

Numerical modeling of the urban boundary layer is complicated by the need to describe airflow patterns outside of the computational domain. These patterns have an impact on how successfully the simulation is able to model the turbulence associated with the urban boundary layer. This talk presents experiments with the model boundary conditions for simulations that were done to support two Department of Energy observational programs involving the Salt Lake City basin. The Chemical/Biological Non-proliferation Program (CBNP) is concerned with the effects of buildings on influencing dispersion patterns in urban environments. The Vertical Transport and Mixing Program (VTMX) investigating mixing mechanisms in the stable boundary layer and how they are influenced by the channeling caused by drainage flows or by obstacles such as building complexes. Both of these programs are investigating the turbulent mixing caused by building complexes and other urban obstacles.

Calhoun, R.J.; Chan, S.T.; Lee, R.L.

2000-05-18T23:59:59.000Z

464

The urban waterfront in flux : accommodating uncertainty in Brooklyn  

E-Print Network (OSTI)

Urban waterfronts are host to every shade of a city's development. Once pulsating with trade and production, the very reason for the city's existence, the mid 20th century brought jarring macroeconomic shifts and technological ...

Young, Jaime Rene

2011-01-01T23:59:59.000Z

465

Toward a Standardized Metadata Protocol for Urban Meteorological Networks  

Science Conference Proceedings (OSTI)

With the growing number and significance of urban meteorological networks (UMNs) across the world, it is becoming critical to establish a standard metadata protocol. Indeed, a review of existing UMNs indicate large variations in the quality, quantity, and ...

Catherine L. Muller; Lee Chapman; C.S.B. Grimmond; Duick T. Young; Xiao-Ming Cai

2013-08-01T23:59:59.000Z

466

Cultural mobilities: diversity and agency in urban computing  

Science Conference Proceedings (OSTI)

The rise of wireless networks and portable computing devices has been accompanied by an increasing interest in technology and mobility, and in the urban environment as a site of interaction. However, most investigations have taken a relatively narrow ...

Paul Dourish; Ken Anderson; Dawn Nafus

2007-09-01T23:59:59.000Z

467

Parameterization of Net All-Wave Radiation for Urban Areas  

Science Conference Proceedings (OSTI)

A simple scheme to estimate net all-wave radiation (Q*) is evaluated using annual datasets in three urban settings (Chicago, Illinois; Los Angeles, California; and ?d?, Poland). Results are compared with a regression model based on incoming ...

B. Offerle; C. S. B. Grimmond; T. R. Oke

2003-08-01T23:59:59.000Z

468

Spatial and Temporal Characteristics of Beijing Urban Heat Island Intensity  

Science Conference Proceedings (OSTI)

An hourly dataset of automatic weather stations over Beijing Municipality in China is developed and is employed to analyze the spatial and temporal characteristics of urban heat island intensity (UHII) over the built-up areas. A total of 56 ...

Ping Yang; Guoyu Ren; Weidong Liu

2013-08-01T23:59:59.000Z

469

Urban redevelopment in sunbelt cities : strategies and approaches  

E-Print Network (OSTI)

Most Sunbelt cities reflect the suburbanization that characterized urban growth and development over the past forty years. Given this dispersion, these cities often contain large areas of strategically located land that ...

Moore, James A. (James Andrew), 1959-

1996-01-01T23:59:59.000Z

470

Meteorological and Air Pollution Modeling for an Urban Airport  

Science Conference Proceedings (OSTI)

Preliminary results are presented for numerical experiments modeling meteorology, multiple pollutant sources and nonlinear photochemical reactions for the case of an airport in a large urban area with complex terrain. The meteorological model ...

Paul R. Swan; In Young Lee

1980-05-01T23:59:59.000Z

471

Influence of Urban Aerosol on Spectral Solar Irradiance  

Science Conference Proceedings (OSTI)

From a dataset of spectral distribution of global and disuse solar irradiances measured in Barcelona during the last three years, the influence of turbidity caused by urban aerosol on spectral composition of solar radiation and transmissivity of ...

J. Lorente; A. Reda; X. De Cabo

1994-03-01T23:59:59.000Z

472

Who is buying urban condominiums? : a tale of four cities  

E-Print Network (OSTI)

This thesis is an analysis of the current trend in urban condominium and loft sales in the United States. It focuses specifically on the question of whom, demographically speaking, is buying the incredible influx of new ...

DeLaney, Robert M. (Robert Michael)

2005-01-01T23:59:59.000Z

473

Estimating material and energy intensities of urban areas  

E-Print Network (OSTI)

The objective of this thesis is to develop methods to estimate, analyze and visualize the resource intensity of urban areas. Understanding the resource consumption of the built environment is particularly relevant in cities ...

Quinn, David James, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

474

Adaptation and adaptability : expectant design for resilience in coastal urbanity  

E-Print Network (OSTI)

What is the nature of and possibility for urban resiliency through adaptation? Adaptation implies responsiveness to phenomena that are disruptive to a system's functioning; it is a willful evolution in response to changed ...

Ruskeep, Laura A. Delaney (Laura Ashley Delaney)

2011-01-01T23:59:59.000Z

475

Sustainable urban forms for Chinese typical new towns  

E-Print Network (OSTI)

The phenomena of exploding world urban population and sharply decreasing global arable lands are illustrated in contemporary China in a dramatically amplified form. Construction of many new towns in rural areas has been ...

Son, Sunhwa, 1980-

2008-01-01T23:59:59.000Z

476

Athens 1833-1979 : the dynamics of urban growth  

E-Print Network (OSTI)

His thesis deals with the urban development of the city of Athens since its foundation as the capital of the newborn Greek State (1833) , until our days. The study focuses on two particular characteristics that dominate ...

Loukopoulos, Dimitris

1980-01-01T23:59:59.000Z

477

China's Urban Energy: Status, Trends and Community Energy Planning  

NLE Websites -- All DOE Office Websites (Extended Search)

Date: September 29, 2011 - 12:00pm Location: 90-4133 Seminar HostPoint of Contact: Rui Fan Along with economic development and the urbanization process, energy use in China has...

478

Modification of an Operational Dispersion Model for Urban Applications  

Science Conference Proceedings (OSTI)

An operational multisource, multireceptor Gaussian dispersion model, the Danish regulatory model Operationelle Meteorologiske Luftkvalitetsmodeller (OML) has been modified for applications in urban environments. A so-called roughness sublayer has ...

Peter de Haan; Mathias W. Rotach; Maja Werfeli

2001-05-01T23:59:59.000Z

479

Modeling Turbulent Flow in an Urban Central Business District  

Science Conference Proceedings (OSTI)

The Realistic Urban Spread and Transport of Intrusive Contaminants (RUSTIC) model has been developed as a simplified computational fluid dynamics model with a k? turbulence model to be used to provide moderately fast simulations of turbulent ...

Donald A. Burrows; Eric A. Hendricks; Steve R. Diehl; Robert Keith

2007-12-01T23:59:59.000Z

480

Estimating Urban Canopy Parameters Using Synthetic Aperture Radar Data  

Science Conference Proceedings (OSTI)

This paper introduces a remote sensingbased approach to rapidly derive urban morphological characteristics using radar satellite data. The approach is based on the expectation that the magnitude of the synthetic aperture radar (SAR) backscatter ...

Indumathi Jeyachandran; Steven J. Burian; Stephen W. Stetson

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "urban pomona loop" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Proximity of body & mind : urban gym as a heterotopic domain  

E-Print Network (OSTI)

In the present urban space, where an individual is exposed to the conditions of heterogeneity and anonymity, a conventional Bodybuilding Gym opens up certain issues of emplacement of un/nder-spoken men's body and its ...

Lee, Hyung Suk, 1971-

2002-01-01T23:59:59.000Z

482

Panel data analyses of urban economics and housing markets  

E-Print Network (OSTI)

The thesis looks three pertinent issues in Housing Market and Urban Economics literature with panel data- home sales and house price relationship, efficiency of housing market and commercial property taxation. For the first ...

Lee, Nai Jia

2009-01-01T23:59:59.000Z

483

Edens islands rooms : the project of the urban interior  

E-Print Network (OSTI)

The privately owned public interior, defined here as an enclosed urban space owned by a private entity, has been a recurrent character of many 20th century liberal cities. It has today found an epitome in the mega-structural ...

Mahindroo, Amrita

2011-01-01T23:59:59.000Z

484

Lawrence Livermore signs agreement to work with Center for Urban...  

NLE Websites -- All DOE Office Websites (Extended Search)

signs agreement to work with Center for Urban Science and Progress Stephen P Wampler, LLNL, (925) 423-3107, wampler1@llnl.gov Printer-friendly In the future, researchers from...

485

Between external and internal space : an urban transition  

E-Print Network (OSTI)

The aim of this dissertation is to explore the evolution of both architecture and urban space, in terms of mutual relationship between solids and voids, with particular attention to two transitional moments of ancient and ...

Cappelletti Daniele

2012-01-01T23:59:59.000Z

486

Urban mechanics : the parking garage as an instrument of legibility  

E-Print Network (OSTI)

No typology has fragmented urban space more than the parking garage. In fact, the city of Houston's parking contingent practice has a resulted in a garage on 30% of the downtown district.The range from a few underground ...

Martinez, Marcus E. (Marcus Eugene)

2012-01-01T23:59:59.000Z

487

The engineers and the urban system, 1968-1974/  

E-Print Network (OSTI)

The social policy agenda of the Great Society was shaped by the recognition that if broad social improvement was to be achieved in urban America, social planning and state intervention based on systemically acquired expertise ...

Wood, Alexander Hilton

2012-01-01T23:59:59.000Z

488

Chinese Mothers and Adolescents' Views of Parent-Adolescent Conflict and the Quality of Their Relationship ---- A study of parent-adolescent relationship in urban and rural China  

E-Print Network (OSTI)

in contemporary urban and rural China. Child Development,between the urban and rural areas in China. Productivityadolescents in urban and rural China. Journal of Research on

Chen, Min

2010-01-01T23:59:59.000Z

489

Hybrid Combustion-Gasification Chemical Looping Coal Power Technology Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Gasification Technologies contacts Gary J. stiegel Gasification Technology Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236 412-386-4499 gary.stiegel@netl.doe.gov Ronald Breault Project Manager National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507 304-285-4486 ronald.breault@netl.doe.gov Herbert E. andrus, Jr. Principal Investigator ALSTOM Power 2000 Day Hill Rd. Windsor, CT 06095 860-285-4770 herbert.e.andrus@power.alstom.com Hybrid Combustion-GasifiCation CHemiCal loopinG Coal power teCHnoloGy development Description Gasification technologies can provide a stable, affordable energy supply for the nation, while also providing high efficiencies and near zero pollutants. With coal

490

Geothermal Loop Experimental Facility. Quarterly report, April--June 1978  

DOE Green Energy (OSTI)

The Geothermal Loop Experimental Facility (GLEF) was modified to use a two stage flash process with two parallel flash trains for the extraction of energy from a high temperature, high salinity, liquid-dominated resource. Since plant start-up in May 1976, a substantial amount of information has been obtained on the operation of the plant, components, brine and steam composition, production and injection wells, and the potential of the Niland Reservoir. The general operation and accomplishments of the GLEF during the period April 1978 through June 1978 are discussed. The GLEF underwent a major redesign. Modifications and inspections of various GLEF equipment and systems are also discussed. Information about the production and injection wells flow testing and instrumentation are discussed. Information regarding coatings and linings for valves and piping is included. In the Chemistry Section there is a wide range of data taken from Brine, Steam, Scale, Binary, Condensate, and Cooling Water Systems.

Bischoff, W.S.; Bishop, H.K.; Cooney, C.S.; Hanenburg, W.H.; Hoaglin, G.J.; Jacobson, W.O.; Mulliner, D.K.; Newell, D.G.; Swanson, C.R.

1978-07-01T23:59:59.000Z

491

Study of Transients in an Enrichment Closed Loop  

E-Print Network (OSTI)

In the present thesis a mathematic model is presented in order to describe the dynamic behavior inside a closed enrichment loop, the latter representing a single stage of an uranium gaseous diffusion enrichment cascade.The analytical model is turned into a numerical model, and implemented through a computational code.For the verification of the model, measurements were taken in an experimental circuit using air as the process fluid.This circuit was instrumented so as to register its characteristic thermohydraulic variables.The measured transients were simulated, comparing the numerical results with the experimental measurements.A good agreement between the characteristic setting times and the thermohydraulic parameters evolution was observed.Besides, other transients of two species separation were numerically analyzed, including setting times of each magnitude, behavior of each one of them during different transients, and redistribution of concentrations.

Fernandino, M

2002-01-01T23:59:59.000Z

492

Geothermal Loop Experimental Facility. Quarterly report, January--March 1978  

DOE Green Energy (OSTI)

The Geothermal Loop Experimental Facility (GLEF) utilizes a four stage flash/binary process for the extraction of energy from a high temperature, high salinity, liquid-dominated resource. Since plant start-up in May 1976, a substantial amount of information has been obtained on the operation of the plant, components, brine and steam composition, production and injection wells, and the potential of the Niland Reservoir. The general operation and activities of the GLEF during the period January 1978 through March 1978, are discussed. The production and injection well encountered no unusual difficulties. Scrubber performance tests were rerun this period and are discussed. Steam pH, conductivity, chemical composition, brine and scale properties, pigging, and component optimization efforts are discussed. The injection pump difficulties and condenser plugging problems are detailed. The feasibility study for a 50 MWe plant and H/sub 2/S abatement are discussed.

Bischoff, W.S.; Bishop, H.K.; Cooney, C.S.; Hanenburg, W.H.; Hoaglin, G.J.; Jacobson, W.O.; Mulliner, D.K.; Newell, D.G.; Swanson, C.R.

1978-04-01T23:59:59.000Z

493

MULTIOBJECTIVE OPTIMIZATION POWER GENERATION SYSTEMS INVOLVING CHEMICAL LOOPING COMBUSTION  

SciTech Connect

Integrated Gasification Combined Cycle (IGCC) system using coal gasification is an important approach for future energy options. This work focuses on understading the system operation and optimizing it in the presence of uncertain operating conditions using ASPEN Plus and CAPE-OPEN compliant stochastic simulation and multiobjective optimization capabilities developed by Vishwamitra Research Institute. The feasible operating surface for the IGCC system is generated and deterministic multiobjective optimization is performed. Since the feasible operating space is highly non-convex, heuristics based techniques that do not require gradient information are used to generate the Pareto surface. Accurate CFD models are simultaneously developed for the gasifier and chemical looping combustion system to characterize and quantify the process uncertainty in the ASPEN model.

Juan M. Salazar; Urmila M. Diwekar; Stephen E. Zitney

2009-01-01T23:59:59.000Z

494

Minimally doubled fermions at one-loop level  

E-Print Network (OSTI)

Single fermionic degrees of freedom together with standard chiral symmetry at finite lattice spacing, correct continuum limit and local interactions only are precluded by the Nielsen-Ninomiya no-go theorem. The class of minimally doubled fermion actions exhibits exactly two chiral modes. Recent interest in these actions has been sparked by the investigation of fermionic actions defined on "hyperdiamond" lattices. Due to the necessity of breaking hypercubic symmetry explicitly, radiative corrections generate operator mixings with relevant and marginal operators that should vanish in continuum QCD. These cannot be avoided and must be taken into account in particular by a peculiar wave-function renormalisation and additive momentum renormalisation. Renormalisation properties at one-loop level of the self-energy, local bilinears and conserved vector and axial-vector currents are presented for Borici-Creutz and Karsten-Wilczek actions. Distinct differences and similarities between both actions are elucidated.

Capitani, Stefano; Wittig, Hartmut

2009-01-01T23:59:59.000Z

495

Geothermal Loop Experimental Facility. Quarterly report, October-December 1978  

DOE Green Energy (OSTI)

The Geothermal Loop Experimental Facility (GLEF) was modified in April 1978 from a four stage flash/binary process to a two stage cycle for the extraction of energy from a high temperature, high salinity, liquid-dominated resource. The overhaul and cleaning during October and pigging problems which led to a limited shutdown in December are discussed. Reservoir assessment, including production and injection wells, are discussed. Results of tests that were accomplished are included. Laboratory data obtained for steam, brine, binary and cooling water, and scale are indicated. Any equipment that required repairs or modifications to equipment and the clarifier/media filter are discussed. The status of the feasibility and surge studies is covered. (MHR)

Anastas, G.; Bischoff, W.S.; Bishop, H.K.

1979-01-01T23:59:59.000Z

496

On the Semiclassical Limit of Loop Quantum Cosmology  

E-Print Network (OSTI)

We consider a k=0 Friedman-Robertson-Walker (FRW) model within loop quantum cosmology (LQC) and explore the issue of its semiclassical limit. The model is exactly solvable and allows us to construct analytical (Gaussian) coherent-state solutions for each point on the space of classical states. We propose physical criteria that select from these coherent states, those that display semiclassical behavior, and study their properties in the deep Planck regime. Furthermore, we consider generalized squeezed states and compare them to the Gaussian states. The issue of semiclassicality preservation across the bounce is studied and shown to be generic for all the states considered. Finally, we comment on some implications these results have, depending on the topology of the spatial slice. In particular we consider the issue of the recovery, within our class of states, of a scaling symmetry present in the classical description of the system when the spatial topology is non-compact.

Alejandro Corichi; Edison Montoya

2011-05-13T23:59:59.000Z

497

Hanford Tank Farms Waste Certification Flow Loop Test Plan  

Science Conference Proceedings (OSTI)

A future requirement of Hanford Tank Farm operations will involve transfer of wastes from double shell tanks to the Waste Treatment Plant. As the U.S. Department of Energy contractor for Tank Farm Operations, Washington River Protection Solutions anticipates the need to certify that waste transfers comply with contractual requirements. This test plan describes the approach for evaluating several instruments that have potential to detect the onset of flow stratification and critical suspension velocity. The testing will be conducted in an existing pipe loop in Pacific Northwest National Laboratorys facility that is being modified to accommodate the testing of instruments over a range of simulated waste properties and flow conditions. The testing phases, test matrix and types of simulants needed and the range of testing conditions required to evaluate the instruments are described

Bamberger, Judith A.; Meyer, Perry A.; Scott, Paul A.; Adkins, Harold E.; Wells, Beric E.; Blanchard, Jeremy; Denslow, Kayte M.; Greenwood, Margaret S.; Morgen, Gerald P.; Burns, Carolyn A.; Bontha, Jagannadha R.

2010-01-01T23:59:59.000Z

498

Geothermal Loop Experimental Facility. Quarterly report, April-June 1979  

DOE Green Energy (OSTI)

Since the Geothermal Loop Experimental Facility (GLEF) start-up in May, 1976, a substantial amount of information has been obtained on the operation of the plant and its components, brine and steam composition, production and injection wells, and the potential of the Niland Reservoir. The GLEF was modified in April, 1978, from a four stage flash/binary process to a two stage flash cycle for the extraction of energy from a high temperature, high salinity, liquid-dominated resource. A Reactor Clarifier/Media Filter System was put in operation in May, 1979 to demonstrate that suspended solids in the brine could be removed prior to brine injection into the reservoir. The general operations and accomplishments of the GLEF during the period are summarized.

Anastas, G.; Bischoff, W.S.; Bishop, H.K.

1979-07-01T23:59:59.000Z

499

Design and Fabrication of a Vertical Pump Multiphase Flow Loop  

E-Print Network (OSTI)

A new centrifugal pump has been devised to handle two-phase flow. However, it requires full scale testing to allow further development. Testing is required to verify performance and to gain information needed to apply this design in the field. Further, testing will allow mathematical models to be validated which will allow increased understanding of the pump's behavior. To perform this testing, a new facility was designed and constructed. This facility consists of a closed flow loop. The pump is supplied by separate air and water inlet flows that mix just before entering the pump. These flows can be controlled to give a desired gas volume fraction and overall flow rate. The pump outlet flows into a tank which separates the fluids allowing them to re-circulate. Operating inlet pressures of up to three hundred PSIG will be used with a flow rate of twelve hundred gallons per minute. A two-hundred fifty horsepower electric motor is used to power the pump. The loop is equipped with instrumentation to measure temperature, pressure, flow rate, pump speed, pump shaft horsepower, shaft torque, and shaft axial load. The pump itself has a clear inlet section and a clear section allowing visualization of the second stage volute interior as well as numerous pressure taps along the second stage volute. This instrumentation is sufficient to completely characterize the pump. Design and construction details are provided as well as a history of the initial operating experiences and data collected. A discussion of lessons learned is given in the conclusions. Future projects intended to use this facility are also given. Finally, detailed design drawings are supplied as well as operating instructions and checklists.

Kirkland, Klayton 1965-

2012-12-01T23:59:59.000Z

500

A Radiation Tolerant Phase Locked Loop Design for Digital Electronics  

E-Print Network (OSTI)

With decreasing feature sizes, lowered supply voltages and increasing operating frequencies, the radiation tolerance of digital circuits is becoming an increasingly important problem. Many radiation hardening techniques have been presented in the literature for combinational as well as sequential logic. However, the radiation tolerance of clock generation circuitry has received scant attention to date. Recently, it has been shown that in the deep submicron regime, the clock network contributes significantly to the chip level Soft Error Rate (SER). The on-chip Phase Locked Loop (PLL) is particularly vulnerable to radiation strikes. In this thesis, we present a radiation hardened PLL design. Each of the components of this design-the voltage controlled oscillator (VCO), the phase frequency detector (PFD) and the charge pump/loop filter-are designed in a radiation tolerant manner. Whenever possible, the circuit elements used in our PLL exploit the fact that if a gate is implemented using only PMOS (NMOS) transistors then a radiation particle strike can result only in a logic 0 to 1 (1 to 0) flip. By separating the PMOS and NMOS devices, and splitting the gate output into two signals, extreme high levels of radiation tolerance are obtained. Our design uses two VCOs (with cross-coupled inverters) and charge pumps, so that a strike on any one is compensated by the other. Our PLL is tested for radiation immunity for critical charge values up to 250fC. Our SPICE-based results demonstrate that after exhaustively striking all circuit nodes, the worst case jitter of our hardened PLL is just 37.4 percent. In the worst case, our PLL returns to the locked state in 2 cycles of the VCO clock, after a radiation strike. These numbers are significant improvements over those of the best previously reported approaches.

Kumar, Rajesh

2010-08-01T23:59:59.000Z